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ForumsCompounding & FormulationEndotoxin testing in compounded injectables — LAL vs rFC methods Page 3

Endotoxin testing in compounded injectables — LAL vs rFC methods

LabKate Sat, Jun 6, 2026 at 12:43 AM 17 replies 423 viewsPage 3 of 4
RegAffairsDC
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Jun 6, 2026 at 6:49 PM#11
JenPlateau said:
They are two different exemptions from the same federal requirements and they buy different things.

That reframing is the part I needed. Taking it to my next appointment.

Last edited: Jun 6, 2026 at 8:49 PM
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PharmHunterJen
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Jun 7, 2026 at 12:05 AM#12

Adding the clinical framing, because it changes how the question reads.

I have been on both brand and compounded, and in the context of compounded supply, my experience has been equivalent with both. The key is finding a reliable 503B pharmacy with independent testing.

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LipidDoc_ATL
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Jun 7, 2026 at 5:21 AM#13
Dr.RaviCardio said:
GMP compliance checklist relevant to compounded supply compounding quality: Clean room environment with HEPA filtration Environmental monitoring…

Price comparison for compounded supply across sources I've used:

SourceMonthly CostTypePurity Verified
Brand (Ozempic)$943FDA-approvedN/A (pharma)
503B Compounding$173cGMP compoundedYes (in-house)
503A Compounding$93Patient-specificVaries
Research peptide$58Not for human useOften Janoshik

I use the 503B option — best balance of quality, cost, and legality. The brand price is insane but insurance can help if you qualify.

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dave_SLC
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Jun 7, 2026 at 10:38 AM#14
LabKate said:
Resolution therefore closed the doors unevenly, and the asymmetry follows from the bulks lists.

Beyond-use dating (BUD) for compounded supply compounded products:

Lyophilized (unreconstituted): typically 6 months from compounding date
Reconstituted with BAC water: typically 28-30 days refrigerated
Reconstituted with sterile water: typically 24 hours (no preservative!)

Always use BAC water for multi-dose vials. Sterile water has no preservative and supports bacterial growth after first puncture. This is a common and potentially dangerous mistake.

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Admin
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Jun 7, 2026 at 3:54 PM#15

Moderator note: the sourcing question belongs in the vendor section and has been split out. Tagging this one for the weekly digest.

Last edited: Jun 7, 2026 at 7:54 PM
31 4PeptideSynthNJ, Dr.KarenChen, Dr.NateNeph and 28 others
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