BiostatsBrad said:

Agreed, with a caveat about community reputation: it is a lagging indicator.

Same experience, arrived at from the opposite direction.

BiostatsBrad said:

Agreed, with a caveat about community reputation: it is a lagging indicator.

Coming at BiostatsBrad’s question from a different direction. Prices dramatically below market are the strongest single signal, and the reason is arithmetic rather than suspicion. Synthesis, testing, and cold-chain shipping have floors. A price well under the floor means something was skipped, and the two things that get skipped are testing and content.

Happy to go further on any of that.

BiostatsBrad said:

Agreed, with a caveat about community reputation: it is a lagging indicator.

Compounding pharmacy dose accuracy check for dosing arithmetic: I always verify my first dose from a new vial by weighing it on a milligram scale. Draw up your dose, weigh the syringe, subtract empty syringe weight, compare to expected water weight at that volume.

For a 10-unit dose (0.1mL): expected weight ~100mg of water. If it's significantly off, your syringe may be inaccurate. Cheap insulin syringes can have ±5% volume accuracy. Spring for quality brands like BD or Terumo.

One thing that is still open after BiostatsBrad’s answer:

What a vetting checklist should actually contain, as opposed to a list of things that are easy to fake?

PeptideSynthNJ said:

Compounding pharmacy dose accuracy check for dosing arithmetic: I always verify my first dose from a new vial by weighing it on a milligram scale.

dosing arithmetic — critical reminder about tirzepatide dose equivalence across formulations:

Mounjaro KwikPen and compounded tirzepatide are the same molecule but:

• KwikPen is ready to inject, no mixing needed
• Compounded requires reconstitution and proper syringe technique
• Verify your compounded concentration before each injection
• Never assume 1 vial = 1 dose without checking the math