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c/compounding·submitted 4 months ago by u/naomi_erdogan

does 503B actually matter or is it forum lore at this point

Discussionbranch of 7 comments

Slightly embarrassed to be asking this, but: does 503B actually matter or is it forum lore at this point. Asked for potency testing on the finished preparation. They had it. I had assumed they would not. On concentration, which is where I see people actually get hurt. A compounded vial can be filled at a different…

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7 comments, started 3 months ago
u/mateusz_adebayo15 points·3 months ago·edited

Potency and sterility testing on the finished preparation are separate from any certificate covering the starting material. Ask which you are being shown.

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u/lukas_delgado12 points·3 months ago

Salt form matters for mass: a preparation specified as one salt and dosed as the free base gives you a different amount of peptide for the same number on the label.

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u/ruben_cabrera5 points·3 months ago

shortage status changes and the whole arrangement changes with it

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u/emeka_chowdhury4 points·3 months ago

What concentration is on the label, and does it match what you were expecting?

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u/pavel_kravchenko1 point·3 months ago

Cosigning the beyond-use date question. What it is based on tells you whether anybody has done stability work.

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u/quiet_moderatorMOD9 points·3 months ago

Removed the staff name. Facilities and clinics can be named here; individuals cannot.

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u/rafael_ostergaard6 points·3 months ago

That figure is the starting material purity, not the finished preparation potency. Two different tests.

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Compounded GLP-1s as a supply route: the 503A/503B distinction, the shortage-list mechanics that made compounding legal and then didn't, state board rules, telehealth prescriber models, and what a compounding pharmacy will and will not tell you about its API source.

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