GLPHubglpresearchhub.com
Read-only archive. GLP Research Hub is a static community record — nothing here is for sale, no account is needed, and no vote you cast is counted. Why?
Single comment threadYou are looking at one branch of what would you tell week-1 you about batch — 66 comments in the full submission. View in context.
1.7k
c/coa·submitted 1 months ago by u/anders_kuusela

what would you tell week-1 you about batch

COAbranch of 5 comments

Right, the certificate of analysis question again, but with numbers this time. I have 4 data points over 16 weeks. The pattern is consistent enough that I do not think it is chance, and boring enough that nobody is going to screenshot it, which is usually a good sign. The thing I would flag for anyone new: the effect…

Read the full submission and all 66 comments →

This branch

5 comments, started 1 months ago
u/ignacio_silva185 points·1 months ago

Three years on this site and the questions have not changed at all. Which is depressing or reassuring depending on the day.

replysharereportpermalink
u/anya_moreau66 points·1 months ago

Strongly agree. Mass% and area% are answering different questions on the same document.

replysharereportpermalink
u/sofia_danquah75 points·1 months ago

purity and net content are two different numbers, same vial

replysharereportpermalink
u/coa_janitormod · c/coa114 points·1 months ago

Disagree but this is the good kind of wrong — it is specific enough to be checked.

replysharereportpermalink
u/cesar_ivaturi79 points·1 months ago

redact your own name, not the vendor's batch details

replysharereportpermalink

← back to the whole thread

About c/coa

How to read a certificate of analysis and what it does and does not tell you. Area% versus mass%, identity versus quantity, water content, related substances, acetate counterions, and the difference between a vendor-supplied COA and an independent test on the vial you actually received.

71kmembers
130submissions
Aug 2023created
submissions / month, last year
Sponsored

PeptideMeter Analytics

Independent testing plus vendor-level trend data. Community-funded, unaffiliated.

peptidemeter.com
More in c/coa
c/coa rules
  1. Post the full document. Cropped COAs that hide the batch number or date get removed.
  2. Redact your own name and order id, not the vendor's batch details.
  3. No "is this good?" without saying what the compound and claimed purity are.
  4. Independent community. Nobody here sells anything, and anyone who tries is banned.
  5. Not medical advice. Describe what you did; never prescribe to a stranger.
  6. Claims need evidence. Batch numbers, dated screenshots, independent test reports, or a citation.
  7. No referral links, discount codes or affiliate URLs. Permanent ban, no appeal.
  8. No contact handles, wallet addresses or tracking numbers — they identify people.
  9. Be recognisably decent. Disagree hard, insult nobody.
Full rules and how they are enforced →
Moderators
u/coa_janitoru/purity_pedantu/coa_collectoru/certified_referenceu/first_hundred
Volunteers. Unpaid, unaffiliated, and reachable through modmail only.
Before you read on

Several compounds discussed on GLP Research Hub are sold for research use only and are not approved for human use anywhere. Nothing here is medical advice and none of it is written by your clinician. If a post reads like an instruction, treat it as a description of what one stranger did.

Full disclaimer →