Helix Research Supply PT-141: content discrepancy in PI-LAB-2026-0018

Helix Research Supply's PT-141 came back with a discrepancy, specimen PI-LAB-2026-0018 if you want to look at it yourself.

Purity was actually fine at 97.6%. The problem is the amount, 8.4mg measured against 10mg on the label. Which is the kind of thing a purity-only COA sails straight past.

Has anyone else bought from this lot? Trying to work out if it's just this batch or something broader.

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hugo21 9mo ago 14 found helpful

Answered your second question in a DM since it was getting long, but short version is yes with caveats.

ines88 9mo ago

That is a better argument than the one above it.

LabNotes Verified 8mo ago 13 found helpful

Noted, thanks.

cascade_kai 7mo ago

Worth separating two things here. Purity tells you what fraction of the material is the target compound. Identity tells you whether the target compound is what the label says. A product can pass one and fail the other, and they are different assays.