Topic
Reading a certificate of analysis
What a COA certifies, what it omits, and how to read the related-substances table rather than just the headline number.
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2024-08first seen
2026-06last seen
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u100_patwhats the related substances table actually telling me#coa-reading · 2024-08-18knees_firstthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2024-09-20deamidationthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2024-10-06night_pinwhats the related substances table actually telling me#coa-reading · 2024-10-26reta_low_dosewhats the related substances table actually telling me#coa-reading · 2024-11-17rotate_the_siteshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2024-11-17seven_five_sweetthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2024-11-25chlorhexthe related substances table is the interesting part. a row of "not detected" means they did not look hard, thats just me#coa-reading · 2025-01-04gradient_gregwhats the related substances table actually telling me#coa-reading · 2025-01-04deamidationworth stating plainly: research material is not approved for human use. everyone here knows that and it stays true no matter…#tirzepatide · 2025-01-05lot_number_louthe related substances table is the interesting part. a row of "not detected" means they did not look hard, n of 1 obviously#coa-reading · 2025-01-05cold_chain_cmdrwhats the related substances table actually telling me#coa-reading · 2025-01-13blank_runshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly, thats one…#hplc-massspec · 2025-01-25cold_chain_cmdrwhats the related substances table actually telling me#coa-reading · 2025-01-26fibre_firstthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-01-26warsaw_vialthe related substances table is the interesting part. a row of "not detected" means they did not look hard, i think#coa-reading · 2025-01-27seizure_letterwhats the related substances table actually telling me#coa-reading · 2025-01-28void_volumeshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-01-29area_percentwhats the related substances table actually telling me#coa-reading · 2025-02-02see_a_clinicianquick one whats the related substances table actually telling me#coa-reading · 2025-02-04vialkeeperwhats the related substances table actually telling me#coa-reading · 2025-02-09tare_weightthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-02-09pbs_pipthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-02-12endotoxin_edthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-02-22invoice_mismatchquick one shallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-02-24week_zerowhats the related substances table actually telling me#coa-reading · 2025-02-28split_the_costupdate on the earlier thing the related substances table is the interesting part. a row of "not detected" means they did not…#coa-reading · 2025-03-01week_zeromy order came with a COA and i can just about read the header. it says 99.2% is that good#coa-reading · 2025-03-03tarpit_tama COA is a record that a named lab ran named methods on a named lot and got these numbers. that is all it is. it is not a…#coa-reading · 2025-03-03tarpit_tamno, and that is the single most misunderstood line on any COA. hold on, that deserves its own go#coa-reading · 2025-03-03tarpit_tamcorrect. a COA is a chain of accountability. every retyped field breaks a link in it#coa-reading · 2025-03-03bea_reconstituteswelcome to #coa-reading#coa-reading · 2025-03-03acetate_ashshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly, anyway#hplc-massspec · 2025-03-04mag_citratewhats the related substances table actually telling me#coa-reading · 2025-03-08mag_citratethe related substances table is the interesting part. a row of "not detected" means they did not look hard, someone check my…#coa-reading · 2025-03-08first_month_fishallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly, from memory#hplc-massspec · 2025-03-10tare_weightthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-03-19assay_not_puritykeeping this one somewhere findable, people ask for it every month#scam-watch · 2025-03-19cat_on_the_traywhats the related substances table actually telling me#coa-reading · 2025-03-21vacuum_vicshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-03-29salt_bridgethe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-03-30blank_runshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-03-30salt_bridgeshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-04-01surpass_twoshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-04-19HPLC_Hankthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-04-20endotoxin_edwhats the related substances table actually telling me#coa-reading · 2025-04-20week_zeroshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-04-20salt_bridgethey show up as a related substance if the method resolves them and inside the main peak if it does not#hplc-massspec · 2025-04-20the_bet_2026the related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-04-28chlorhexwhats the related substances table actually telling me#coa-reading · 2025-05-08hiccup_hollisshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-05-10karl_fischerwhats the related substances table actually telling me#coa-reading · 2025-05-11dexa_or_biathe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-05-21vat_on_importshallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-05-25reta_resting_hrthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-05-30invoice_mismatchthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-06-02blank_runfollow up shallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-06-08LC_MS_Lenathe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-06-09HPLC_Hankthe related substances table is the interesting part. a row of "not detected" means they did not look hard#coa-reading · 2025-06-11the_bet_2026shallow gradients hide related substances behind the main peak. a steeper one separates and looks worse, honestly#hplc-massspec · 2025-06-12