Peter Magic Answers The Most Asked Questions In The Research Space

Janoshik Q&A: COAs, Purity, Sterility & Testing Standards — Part 2 I sat down with Janoshik to dig into the questions our community asks most — how purity is actually determined on blends, why endotoxin testing matters, the truth about degradation studies, and how a lab handles 1,000+ samples a day. Research use only. Not for human consumption. Socials: https://stan.store/peptideprice TIMESTAMPS 00:00 — Can you show purity content/percentage on a COA for blends? 00:57 — How do you handle purity on blends with multiple compounds? 01:31 — Why defining "purity" on raw powders is so difficult (content vs. purity) 04:03 — How finished vials differ (fillers, mannitol, why you can't weigh content) 06:25 — Have you looked into ISO accreditation for HPLC testing? 09:54 — What's the most commonly tested peptide panel? 10:55 — Most tested peptides (tirzepatide, retatrutide, BPC-157, semaglutide) 12:01 — Do you offer rapid sterility (PCR) vs. 14-day? 14:44 — How much equipment do you have running? (HPLCs, total value) 15:21 — Is endotoxin testing actually useful? 16:52 — Internal sample tracking and why clients can't access it 20:55 — Why pictures are now default on COAs 22:56 — Will you edit a COA if a client claims a mistake? 24:22 — Sterile water vs. bacteriostatic water (degradation question) 25:43 — Bacteriostatic water studies (benzyl alcohol evaporation) 26:30 — Does shaking peptides vs. rolling matter? (including AOD gelling) 27:51 — Tesamorelin refrigerated vs. room temp — can misfolding be detected? 29:50 — How are new labs getting their methodologies? 32:08 — Where do most samples come from? (US vs. international) 33:00 — Why prices increased and how it affected smaller labs 34:40 — How long Janoshik has been testing (15 years) 35:31 — Should you worry when a peptide degrades a few %? 36:36 — Why GH purity runs lower (recombinant vs. solid-state synthesis) 38:38 — What clients receive on a COA and why raw data is kept minimal 40:58 — Identifying Adamax variants via mass spec (amidate, N-acetyl, etc.) 43:55 — Testing capsules and tablets (net content vs. "purity") 46:14 — Testing nasal sprays, cosmetics, creams, and serums 48:57 — Why "dirty" samples go on the old reliable HPLC