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amylin

Page 5 of 10 · 237 questions tagged amylin.

237 questions · sorted by votes · page 5 of 10

22 votes 5 answers17k views
Is a 27G needle the right choice for drawing cagrilintide at 4 mg/mL?

Stated plainly: a 27G needle · cagrilintide · 4 mg/mL. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can obtain…

needle-gauge
needle-gauge

Gauge and length selection, the trade-off between draw time and tissue trauma, coring risk with larger-bore needles, and why a fixed-needle…

91 questions
injection-technique
injection-technique

Technique questions: angle, pinch versus flat, aspiration, injection speed, air bubbles, and the handling steps that determine whether you deliver…

96 questions
dead-space
dead-space

The volume trapped in the syringe hub and needle after the plunger bottoms out. It is small in absolute terms and large as a fraction of a small…

117 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by Dr_Colm_Fitzhenry 69k · 10 months ago
22 votes 5 answers16k views
What should be in place before a first cagrilintide vial arrives from Wuhan?

The specifics, since they change the answer: cagrilintide · Wuhan. I would rather over-plan the first cycle and simplify later. I am prepared to do the work if…

harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

472 questions
research-use-only
research-use-only

What "for research use only" means as a legal and practical designation: not approved for human use, no pharmacopoeial release testing, no…

95 questions
sterility
sterility

Sterility as a test result rather than an adjective. Covers what a sterility test actually measures, why "sterile filtered" on a document is close…

142 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by threadlock7 19k · 11 months ago
22 votes 5 answers12k views
Has anyone independently verified an ERP cagrilintide batch COA?

The specifics, since they change the answer: ERP · cagrilintide. This is asserted often enough that I assumed it was established, and then I went looking for the…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by Dr_Signe_Baldursdottir 29k · 5 months ago
22 votes1 answer9.3k views
Why does amylin co-agonism add to a GLP-1 effect rather than duplicate it?

I am asking mechanistically rather than practically — I want the model, not the protocol. I can predict the outcome but I cannot explain it, which means I will get…

amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
cagrisema
cagrisema

A fixed-ratio combination of cagrilintide, a long-acting amylin analogue, with semaglutide, studied in the REDEFINE programme. Questions here…

8 questions
glp1-mechanism
glp1-mechanism

Receptor-level pharmacology: GLP-1R as a class B GPCR, cAMP and PKA signalling, biased agonism, internalisation and resensitisation, and the…

132 questions
asked by cake_intact 17k · 11 months ago
22 votes5 answers8.6k views
Is 4 mg/mL a sensible working concentration for cagrilintide, or should I go lower?

Stated plainly: 4 mg/mL · cagrilintide. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I can obtain either option…

diluent-volume
diluent-volume

Choosing how much diluent to add, which is really a question about what you want your measurement resolution to be. Larger volumes buy you…

295 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by ten_mg_vial 31k · 12 months ago
22 votes 5 answers7k views
Is 25 °C an acceptable storage condition for lyophilised cagrilintide?

Setup, so nobody has to ask: 25 °C · cagrilintide. This has the shape of a fact but I cannot find its origin. What I found instead were three secondary sources all…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

701 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by yuki_morishita 10k · 42 days ago
22 votes2 answers6.7k views
Would you accept 98.2% on cagrilintide from Homopeptide without a content assay?

Stated plainly: 98.2% · cagrilintide · Homopeptide. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not tight, and…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by charge_state_3 16k · 3 months ago
21 votes5 answers17k views
What is the reported incidence of dizziness on cagrilintide in REDEFINE-1?

The specifics, since they change the answer: dizziness · cagrilintide · REDEFINE-1. I have the document in front of me and I can read the numbers. What I cannot do is…

clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

745 questions
harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

472 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by felix_araya 6.8k · 6 months ago
21 votes 5 answers9.5k views
Is 2.5 mg in 2 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

Concretely: 2.5 mg · 2 mL · 0.9% sodium chloride · cagrilintide. The failure mode I am trying to avoid is making this decision emotionally. I have twelve months in…

diluent-volume
diluent-volume

Choosing how much diluent to add, which is really a question about what you want your measurement resolution to be. Larger volumes buy you…

295 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by coring_risk 27k · 13 months ago
21 votes0 answers9.3k views
How do I read a cagrilintide chromatogram from Janoshik beyond the headline number?

Setup, so nobody has to ask: cagrilintide · Janoshik. I can parse the result. I am less sure what it licenses me to conclude. I have deliberately not looked at anyone…

hplc
hplc

Reverse-phase high-performance liquid chromatography, the workhorse purity method. Column chemistry, mobile-phase choice, gradient slope,…

503 questions
purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
janoshik
janoshik

Janoshik Analytical, an independent third-party testing laboratory widely used by this community for HPLC purity, identity and quantified content…

139 questions
asked by zeynep_arslan 16k · 2.2 years ago
21 votes5 answers3.8k views
What should be in place before a first cagrilintide vial arrives from Shanghai?

Setup, so nobody has to ask: cagrilintide · Shanghai. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the…

harm-reduction
harm-reduction

Reducing avoidable risk where a decision has already been made: independent verification before use, sterility practice, dose arithmetic checked…

472 questions
research-use-only
research-use-only

What "for research use only" means as a legal and practical designation: not approved for human use, no pharmacopoeial release testing, no…

95 questions
sterility
sterility

Sterility as a test result rather than an adjective. Covers what a sterility test actually measures, why "sterile filtered" on a document is close…

142 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by shear_at_the_front 17k · 11 days ago
20 votes 5 answers29k views
Is room temperature an acceptable storage condition for lyophilised cagrilintide?

Stated plainly: room temperature · cagrilintide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have…

storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

701 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by leah_ferrers 12k · 2.1 years ago
20 votes0 answers24k views
Is 2.5 mg in 0.5 mL of 0.9% sodium chloride a sensible presentation for cagrilintide?

The case in front of me: 2.5 mg · 0.5 mL · 0.9% sodium chloride · cagrilintide. The failure mode I am trying to avoid is making this decision emotionally. I have…

diluent-volume
diluent-volume

Choosing how much diluent to add, which is really a question about what you want your measurement resolution to be. Larger volumes buy you…

295 questions
reconstitution
reconstitution

Taking a lyophilised vial to a solution of known concentration: choice of diluent, volume selection, how to add liquid without shearing the cake,…

313 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by syringe_ninety 12k · 2.2 years ago
20 votes5 answers16k views
Has anyone independently verified a BCH cagrilintide batch COA?

Stated plainly: BCH · cagrilintide. This is asserted often enough that I assumed it was established, and then I went looking for the source. I have searched the…

vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
coa
coa

Certificates of analysis: what fields a useful one carries, how to tell a real analytical report from a marketing document, batch and lot…

771 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by colm_dunphy 8.2k · 2.3 years ago
20 votes0 answers13k views
Is a 27G needle the right choice for drawing cagrilintide at 2.5 mg/mL?

What I am working with: a 27G needle · cagrilintide · 2.5 mg/mL. I suspect the honest answer is that it depends, in which case I would like to know on what. Assume I…

needle-gauge
needle-gauge

Gauge and length selection, the trade-off between draw time and tissue trauma, coring risk with larger-bore needles, and why a fixed-needle…

91 questions
injection-technique
injection-technique

Technique questions: angle, pinch versus flat, aspiration, injection speed, air bubbles, and the handling steps that determine whether you deliver…

96 questions
dead-space
dead-space

The volume trapped in the syringe hub and needle after the plunger bottoms out. It is small in absolute terms and large as a fraction of a small…

117 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by tare_and_weigh 12k · 9 months ago
20 votes 5 answers11k views
Would you accept 96.4% on cagrilintide from CPC without a content assay?

What I am working with: 96.4% · cagrilintide · CPC. I am trying to build something sustainable rather than something thorough that I will abandon. I have already…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by anja_hellstrom 13k · 3 months ago
20 votes 5 answers11k views
How much of the gross mass of a 60 mg cagrilintide vial is actually peptide?

Setup, so nobody has to ask: 60 mg · cagrilintide. I have worked this out and I would like someone to find the error, because I suspect there is one. My working so…

content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
water-content
water-content

Residual moisture in a lyophilised solid, measured by Karl Fischer titration or loss on drying. It drives both the mass balance on a content assay…

51 questions
acetate-content
acetate-content

Counter-ion content, most often acetate or trifluoroacetate, and why it matters: the counter-ion and residual water are part of the gross mass you…

88 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by seamus_brady 15k · 7 months ago
20 votes 4 answers11k views
What happens to cagrilintide after sixteen weeks at minus 20 °C in solution?

What I have: cagrilintide · sixteen weeks · minus 20 °C. I suspect the usual explanation for this is wrong, or at least incomplete. I am aware this may have a boring…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

701 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by b_delacroix 43k · 2 months ago
20 votes 5 answers10k views
My cagrilintide vial sat at 37 °C for seven days — is testing worth it before use?

What I have: cagrilintide · 37 °C · seven days. This is a planning question. I know what my options are; I do not know how to weigh them. What I want is the minimum…

cold-chain
cold-chain

Keeping material within a temperature window from manufacture to use: phase-change packs versus dry ice, thermal mass, transit-lane temperature…

578 questions
peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
batch-testing
batch-testing

Testing at the batch or lot level: sampling plans, how many vials from a lot need testing to say anything about the lot, and the difference…

910 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by tare_weight 60k · 4 months ago
19 votes5 answers36k views
How long does cagrilintide stay within specification at room temperature once reconstituted?

The case in front of me: cagrilintide · room temperature. I can find plenty of assertions about this and almost no reasoning, which is usually a sign that nobody has…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

701 questions
shelf-life
shelf-life

How long a preparation remains within specification: labelled expiry for a sealed lyophilised vial, beyond-use dating after reconstitution, and…

327 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by kirsi_lahtinen 25k · 21 months ago
19 votes 5 answers30k views
Is there any published stability data for cagrilintide at room temperature?

Details up front: cagrilintide · room temperature. I am asking for verification rather than opinion, ideally with something I can read myself. It is possible the…

peptide-stability
peptide-stability

The chemistry of peptide degradation: deamidation, oxidation, hydrolysis, aggregation and fibrillation, and how temperature, pH, ionic strength,…

908 questions
storage
storage

Storage conditions and their evidence base: minus twenty degrees for powder, refrigerated for solution, protection from light, and what the…

701 questions
clinical-trials
clinical-trials

Reading the primary literature properly: estimands, intention-to-treat versus per-protocol, confidence intervals, absolute versus relative…

745 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by swab_stopper 8.8k · 2.4 years ago
19 votes 5 answers15k views
Does splitting a 2.4 mg weekly dose of cagrilintide across two administrations change anything?

Stated plainly: 2.4 mg · cagrilintide. I keep seeing this stated as a fact with no explanation attached, and unexplained facts make me suspicious. My background is…

split-dosing
split-dosing

Dividing a weekly dose across more than one administration. Questions here concern the pharmacokinetic rationale, whether the peak-to-trough ratio…

44 questions
dosing-math
dosing-math

The arithmetic itself: milligrams to millilitres to insulin units, concentration after reconstitution, dose per draw, and vial-days per vial. Show…

764 questions
glp1-mechanism
glp1-mechanism

Receptor-level pharmacology: GLP-1R as a class B GPCR, cAMP and PKA signalling, biased agonism, internalisation and resensitisation, and the…

132 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by tri_gly_ala 24k · 14 months ago
19 votes 5 answers8.4k views
Would you accept 98.2% on cagrilintide from QST without a content assay?

Stated plainly: 98.2% · cagrilintide · QST. I would like to set this up properly once, rather than adjust it repeatedly. My budget is real but not tight, and my…

purity
purity

Purity as chromatographic area per cent - the fraction of detected material that is your target peak. It says nothing about how much material is…

833 questions
content-assay
content-assay

Quantified content: how many milligrams of peptide are actually in the vial, measured against a calibrated reference standard. A separate test…

476 questions
vendor-vetting
vendor-vetting

Evaluating a supplier on evidence rather than reputation: testing history across batches, whether certificates are batch-specific, how failures…

454 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by sunniva_dahl 22k · 14 days ago
18 votes5 answers26k views
Does creatinine tell me anything about hepatic fat on cagrilintide?

What I have: creatinine · cagrilintide. The empirical answer seems settled. The explanation does not. If the honest answer is that nobody knows, I would rather hear…

liver-enzymes
liver-enzymes

ALT, AST, GGT and ALP: what they do and do not indicate about hepatic fat, why enzymes are a poor surrogate for histology, and where non-invasive…

91 questions
mash
mash

Metabolic dysfunction-associated steatohepatitis: histological endpoints, resolution without worsening fibrosis, fibrosis improvement by stage,…

56 questions
bloodwork
bloodwork

Laboratory monitoring: which panels are worth ordering, sensible intervals, reference-range versus optimal-range arguments, and how to read a…

296 questions
kidney-function
kidney-function

eGFR, creatinine, cystatin C and albuminuria: the acute haemodynamic dip that is not injury, the renal outcome data from the FLOW programme, and…

141 questions
amylin
amylin

Amylin and its analogues, most prominently cagrilintide, as a satiety mechanism orthogonal to incretin signalling. Includes the pharmacology of…

237 questions
asked by olu_babatunde 6.2k · 22 months ago