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Evidence-based GLP-1 & peptide discussion since 2023
ForumsCOA & Analytical TestingPaid for independent testing and results did not match vendor COA — looking for input Page 2

Paid for independent testing and results did not match vendor COA — looking for input

PurityPaulOR Sun, Oct 29, 2023 at 4:26 AM 19 replies 2,175 viewsPage 2 of 4
raj_cambridge
Member
489
2,123
Jun 2024
Cambridge, MA
Oct 29, 2023 at 7:16 AM#6
Appreciate the work that goes into this. For anyone budget-conscious — I've been tracking price per mg across all Tier 1 and Tier 2 sources: | Source | Price | Amount | $/mg | |--------|-------|--------|------| | CompoundPharm Direct | $159 | 5mg | $31.80 | | PeptideSciencesRx | $129 | 5mg | $25.80 | | TeleMedCompound | $299/mo | ~10mg/mo | $29.90 | | ResearchChem Outlet | $79 | 5mg | $15.80 | | GLP1Direct | $139 | 5mg | $27.80 | ResearchChem is cheapest per mg, but you're trading off domestic shipping speed and the grey-cap batch hasn't been tested yet. PeptideSciencesRx offers the best value domestically if you're comfortable reconstituting yourself. Caveat: cheaper isn't always better. I'd pay the premium for consistent COAs and reliable shipping any day.
39 18SleepFixSam, PurityPaulOR, MaxMetOK and 36 others
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ricardo_MIA
Member
378
1,678
Sep 2024
Miami, FL
Oct 29, 2023 at 7:33 AM#7
As a healthcare professional lurking here — I want to emphasize something that gets lost in the price comparisons. The compounding pharmacy's license, their sterility protocols, and their beyond-use dating (BUD) are critically important. A 503B facility is required to do sterility testing on each batch. A 503A pharmacy may or may not, depending on state regulations. If you're injecting something subcutaneously, sterility is non-negotiable. Ask your source: what is the BUD on the vial? If they say more than 30 days for an aqueous solution without a preservative like benzyl alcohol, that's a red flag. Properly preserved multi-dose vials typically get a 60-90 day BUD. Also, check if they use 0.9% benzyl alcohol as preservative — that's standard. Some cheaper sources skip it, which means once you puncture the vial, you're on a very short clock before bacterial contamination becomes a concern.
32 24ZaraB_AL, JakeSmashed95, NauseaFreeNow and 29 others
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pete_RVA
Member
178
890
Dec 2024
Richmond, VA
Oct 29, 2023 at 7:50 AM#8
NurseKellyRN makes an excellent point. I'm going to add BUD and preservative info to the Q2 directory. This is exactly the kind of quality data we should be tracking alongside purity and potency. For Q2 2026 (April update), here's what I need from the community: 1. Fresh COAs — especially for ResearchChem Outlet's new grey-cap batches 2. BUD and preservative info from your vial labels 3. Shipping time reports (order date → delivery date) 4. Any new sources you want vetted — send me the info via DM Let's keep building the most transparent vendor directory in the peptide community. Knowledge is safety.
25 4Admin, Dr.Martinez, mike_mod and 22 others
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