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 [Lab] MKM cagri — Medutest came back 97.7% against a claimed 97.0% — 54 comments in the full submission. View in context.
5.4k
c/hplc·submitted 8 months ago by u/ferran_krastev

[Lab] MKM cagri — Medutest came back 97.7% against a claimed 97.0%

Labbranch of 6 comments

Right: MKM cagri — Medutest came back 97.7% against a claimed 97.0%. I paid for this one myself, nobody sent me anything, and the receipts are in the comments. The relevant figures are 97.7% and 97.0%, and they come from the same log I have kept the whole time. Retention time shifted 0.4 minutes and I assumed the…

Read the full submission and all 54 comments →

This branch

6 comments, started 7 months ago
u/amara_haddad163 points·7 months ago

Cosigning the wavelength point. Half the disagreements in this board are two people looking at different detectors.

replysharereportpermalink
u/peak_area_peteMOD119 points·7 months ago

Retitled: the original claimed a comparison the post does not actually make.

replysharereportpermalink
u/anya_erdogan29 points·7 months ago

axis labels or the trace is decoration

replysharereportpermalink
load more comments (1) →
u/rina_bergstrom58 points·7 months ago

I would not blame the sample yet. Everything you have described is consistent with the column rather than the vial.

replysharereportpermalink
u/baseline_drifteranalytical102 points·7 months ago·edited

Do you have the mass, or only the UV trace?

replysharereportpermalink

← back to the whole thread

About c/hplc

The analytical deep end: RP-HPLC methods, gradient design, integration decisions, LC-MS confirmation, amino-acid analysis, water content, and why two labs can report 98.1% and 96.4% on the same vial and both be right. Post the chromatogram, not the summary line.

32kmembers
130submissions
Sep 2023created
submissions / month, last year
Sponsored

Janoshik Analytical

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

janoshik.com
Sponsored

GL Biochem (Shanghai)

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

glbiochem.net
c/hplc rules
  1. Chromatogram or it did not happen. Axis labels included.
  2. State the method: column, gradient, detection wavelength, injection volume.
  3. Area% is not mass%. Posts that conflate them get a correction flair, not a removal.
  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.
Moderators
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.