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Thread · #bloodwork · 2025-05-06

reference ranges differ between labs, so comparing two labs

Spun off from a message in #bloodwork on 2025-05-06. 14 messages, 5 participants.

The message this came from
  • nausea_window — panel came back reference ranges differ between labs, so comparing two labs numbers without the ranges is guesswork, units matter more than people think 17:38
NW

anyone have before and after numbers they are willing to post, for my own notes

eight percent apart

NW

the same draw split between two labs came back about eight percent apart on one marker. that is the noise floor

TT

i had a thyroid number drift and the repeat was fine. i am glad i repeated before i worried, with the reference range though

one for the apob people alt and ast moving down as fat comes off is a common pattern and worth knowing before you panic

6
HH

an isolated lipase a bit over range with no symptoms is usually nothing. lipase with severe pain is not

A1

ranges differ by lab and by assay, so comparing an absolute number across two providers is a trap

they never mind

TT

one for the apob people trend beats absolute for almost everything on a panel except the ones where it does not, bring the printout