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 does batch actually matter or is it forum lore at this point — 24 comments in the full submission. View in context.
391
c/coa·submitted 1 year ago by u/bastian_moreau

does batch actually matter or is it forum lore at this point

Questionbranch of 7 comments

Long-ish post, sorry. tl;dr at the bottom. I have been tracking batch against triglycerides for 17 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here. Caveats up front: one person, one lab, one…

Read the full submission and all 24 comments →

This branch

7 comments, started 1 year ago
u/sofia_danquah11 points·1 year ago

Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.

replysharereportpermalink
u/emil_agyeman9 points·1 year ago·edited

Yeah, 96.8% area is not the problem, the missing impurity breakdown is the problem.

Adding to this: certificate of analysis is doing more work than the comment implies.

replysharereportpermalink
u/bastian_moreauOP4 points·1 year ago

area% is not mass%, and here is exactly why it matters

replysharereportpermalink
u/gallbladder_gary3 points·1 year ago

the related substances line is where the story is

replysharereportpermalink
u/tidy_vialdrawer_watch281 point·1 year ago·edited

Are you looking at area% or net peptide content? Different numbers.

replysharereportpermalink
u/aurel_boateng5 points·1 year ago

the batch number or it did not happen

replysharereportpermalink
u/nadia_kjaer3 points·1 year ago

This is the "correlation is mechanism" thing again. You changed three variables at once.

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

Janoshik Analytical

Independent HPLC and mass spec. The number you get is the number they found.

janoshik.comSponsored

GL Biochem (Shanghai)

Custom peptides and amino acids direct from the manufacturer since 1998. ISO 9001 / cGMP. Batch COA every order.

glbiochem.net
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 →