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?
Archived. This submission is more than a year old. Votes and new comments are closed, and some of the advice in it may have been superseded — check the community wiki for the current version.
0
c/bloodwork·posted 2 years ago by u/kaia_kuusela

what would you tell week-1 you about A1c

Discussion

what would you tell week-1 you about A1c. I am not trying to be the "source?" guy. I would just like a source.

Compared two draws across two labs and spent a week worrying before finding out the assays were different.

Took a baseline the week before starting purely because this board told me to. Best five minutes I have spent on this.

Draw at the same point in the week now, fasting, same lab. The noise dropped enormously once I standardised.

That is everything I have. The rest is opinion and I have tried to keep it out.

0 up / 0 down47% upvoted8 commentsid 10rhhp13 Apr 2024

8 comments

8 in this archive, depth 4

best — the order this archive was captured in

u/kenji_kimani5 points·2 years ago·edited

Different laboratories use different assay platforms with different calibration. Comparing across labs adds a systematic offset that is invisible on the report.

replysharereportpermalink
u/britt_marchand2 points·2 years ago

Different laboratories use different assay platforms with different calibration.

Agreed — and standardising the draw conditions is the cheapest improvement available.

replysharereportpermalink
u/thyroid_tangent2 points·2 years ago

ask whether the lab changed its assay between your two draws

replysharereportpermalink
u/kaia_kuuselaOP1 point·2 years ago·edited

Small fix — a reference interval is not a treatment target, and the post above uses them interchangeably.

replysharereportpermalink
u/sanne_novak4 points·2 years ago

baseline before you start is worth more than any later panel

replysharereportpermalink
u/iman_falk2 points·2 years ago

I would not draw a line through two points, especially when the second was taken at a different time of day.

replysharereportpermalink
u/kaia_kuuselaOP2 points·2 years ago

I would not draw a line through two points, especially when the second was taken at a different time of day.

This is the sentence to read before anybody panics about a single value.

replysharereportpermalink
u/customs_seizure_sid1 point·2 years ago

Brought the whole set to my clinician rather than one flagged value. Completely different conversation.

replysharereportpermalink
About c/bloodwork

What to measure before you start, what to re-measure, and how to interpret movement without panicking. ApoB over LDL-C, HOMA-IR as a crude free tool, ALT and the fatty-liver story, eGFR noise during rapid loss, and the deficiencies that a 1,100-calorie appetite will hand you.

42kmembers
95submissions
Nov 2023created
submissions / month, last year
Sponsored

Sigma-Aldrich Standards

Certified reference materials for peptide identity and purity work.

sigmaaldrich.com
c/bloodwork rules
  1. Post reference ranges with your numbers. Units differ by country and lab.
  2. Nobody here can tell you what a result means for you. We can tell you what it usually means.
  3. Redact identifying details from lab PDFs before posting.
  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.