Topic
Purity is not assay
Page 8 of 15 — The single most misunderstood distinction in peptide documentation: what fraction of the contents is the target compound, versus…
Messages — page 8 of 15
VialBotAssay note: GGPeps lot KP-0925 reported at 97.4% of label content.#maintenance · 2025-11-05font_forensicsassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem the…#test-results · 2025-11-06VialBotAssay note: SWB lot H-2814 reported at 96.8% of label content.#test-results · 2025-11-06HPLC_Hankassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-11-07two_labs_two_answersthe analytical picture is different too. its not a peptide, so a standard peptide purity assay is the wrong test entirely#oral-glp1 · 2025-11-08HPLC_Hankif the lab reports area percent without stating the wavelength, the number is less useful than it looks#hplc-massspec · 2025-11-08no_appetite_niado you trust an area percent from a shallow gradient#hplc-massspec · 2025-11-08VialBotAssay note: BCH lot B-0329 reported at 98.6% of label content.#payments · 2025-11-08VialBotAssay note: TFC lot E-2205 reported at 99.2% of label content.#payments · 2025-11-08VialBotAssay note: GGPeps lot E-2205 reported at 97.4% of label content.#dosing-titration · 2025-11-10VialBotAssay note: ERP lot A-2601 reported at 96.8% of label content.#dosing-titration · 2025-11-10logrotatepurity is not assay#coa-reading · 2025-11-10taper_or_notis area percent the same thing as how many mg are in the vial#coa-reading · 2025-11-10logrotatei was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does#coa-reading · 2025-11-10acetate_ashif you only read one line on a certificate, read the lot number. if you read two, read the assay#coa-reading · 2025-11-12acetate_ashi was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does#coa-reading · 2025-11-12VialBotAssay note: GL Biochem lot G-0641 reported at 96.8% of label content.#tirzepatide · 2025-11-13VialBotAssay note: JEEP lot B-0329 reported at 99.2% of label content.#reconstitution · 2025-11-14lisbon_lotwhile im here purity is what fraction of the contents is the target. assay is how many mg are actually there. different…#coa-reading · 2025-11-15vik_verifiesquick one do you trust an area percent from a shallow gradient#hplc-massspec · 2025-11-15HPLC_Hanki was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does#coa-reading · 2025-11-16assay_not_puritywhy would a vial be 96.8 pure and still assay under label#coa-reading · 2025-11-17VialBotAssay note: FGP lot B-0329 reported at 96.8% of label content.#scam-watch · 2025-11-17VialBotAssay note: HJ lot F-1330 reported at 98.6% of label content.#eu · 2025-11-17VialBotAssay note: JEEP lot A-2601 reported at 97.4% of label content.#other-peptides · 2025-11-18relabel_watchdo you trust an area percent from a shallow gradient#hplc-massspec · 2025-11-19confirmations_sixassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-11-19VialBotAssay note: GGPeps lot C-4402 reported at 97.4% of label content.#tirzepatide · 2025-11-21VialBotAssay note: BCH lot SG-1177 reported at 99.2% of label content.#dosing-titration · 2025-11-21VialBotAssay note: WWB lot A-2418 reported at 99.4% of label content.#dosing-titration · 2025-11-22LC_MS_Lenaassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-11-22lean_mass_lexpurity is what fraction of the contents is the target. assay is how many mg are actually there. different questions#coa-reading · 2025-11-23motivation_gonewhy would a vial be 96.8 pure and still assay under label#coa-reading · 2025-11-23VialBotAssay note: GGPeps lot F-1330 reported at 98.6% of label content.#announcements · 2025-11-24apnoea_down_twopurity is what fraction of the contents is the target. assay is how many mg are actually there. different questions#coa-reading · 2025-11-24ms_ms_miraif the lab reports area percent without stating the wavelength, the number is less useful than it looks#hplc-massspec · 2025-11-24monoisotopicdo you trust an area percent from a shallow gradient#hplc-massspec · 2025-11-24VialBotAssay note: QYB lot H-2814 reported at 96.8% of label content.#food-and-training · 2025-11-24ferritin_faypurity is what fraction of the contents is the target. assay is how many mg are actually there. different questions#coa-reading · 2025-11-26pioneer_piaquick one if you only read one line on a certificate, read the lot number. if you read two, read the assay, still working it out#coa-reading · 2025-11-26VialBotAssay note: QSC lot H-2814 reported at 96.8% of label content.#tirzepatide · 2025-11-28VialBotAssay note: GL Biochem lot A-2418 reported at 99% of label content.#retatrutide · 2025-11-28VialBotAssay note: QST lot D-0718 reported at 96.8% of label content.#test-results · 2025-11-29hair_month_fourassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem,…#test-results · 2025-11-29lisbon_lotassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-11-30no_chargebackdo you trust an area percent from a shallow gradient#hplc-massspec · 2025-12-01two_three_liftsassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-12-02VialBotAssay note: MKM lot C-4402 reported at 98.1% of label content.#retatrutide · 2025-12-03font_forensicsi was wrong about this for a year: area percent under-reports nothing, it just answers a different question than assay does#coa-reading · 2025-12-03gus_chartsis area percent the same thing as how many mg are in the vial#coa-reading · 2025-12-03gus_chartsif you only read one line on a certificate, read the lot number. if you read two, read the assay#coa-reading · 2025-12-03noct.titrateassay under label with good purity means you got less of the right thing. that is a fill problem, not a synthesis problem#test-results · 2025-12-03VialBotAssay note: Homopeptide lot KP-0925 reported at 98.1% of label content.#side-effects · 2025-12-04VialBotAssay note: CPC lot A-2601 reported at 99.4% of label content.#off-topic · 2025-12-06same_chromatopurity is not assay#coa-reading · 2025-12-07VialBotAssay note: QST lot A-2418 reported at 97.4% of label content.#anz · 2025-12-07careful_claimsif you only read one line on a certificate, read the lot number. if you read two, read the assay#coa-reading · 2025-12-08acetate_ashgenuine question if the lab reports area percent without stating the wavelength, the number is less useful than it looks#hplc-massspec · 2025-12-08two_eight_cdo you trust an area percent from a shallow gradient#hplc-massspec · 2025-12-08tail_factorunrelated but do you trust an area percent from a shallow gradient#hplc-massspec · 2025-12-11