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c/bloodwork·posted 29 days ago by u/janek_ferrari

week 67 check-in — 10kg down, muscle cramps manageable, one thing confusing me

Concerning

week 67 check-in — 10kg down, muscle cramps manageable, one thing confusing me. Numbers below. Ask me the boring questions, they are the useful ones.

Since the title puts numbers in the shop window: week 67 and 10kg.

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

Time of day, fasting state, hydration and recent exercise all move common markers. Standardising the draw conditions is free and it removes most of the apparent variability.

Not medical advice, obviously, and nothing here is approved for human use. One person with a spreadsheet.

123 up / 38 down76% upvoted16 commentsid 16al9h30 Jun 2026

16 comments

16 in this archive, depth 5

best — the order this archive was captured in

u/cormac_erdogan28 points·27 days ago

Nobody here can interpret your panel and this comment is not doing so. What a board can usefully do is help you ask better questions of somebody who can.

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u/a1c_arcT2D7 points·27 days ago

Agreed on assay changes. A lab switching platforms between your draws is invisible unless you ask.

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u/kofi_balogun0 points·27 days ago

This. Reference ranges are population intervals, not targets, and conflating them causes a lot of unnecessary alarm here.

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u/step_therapy_s15 points·28 days ago

Substantial weight loss independently moves lipids, liver enzymes and several other markers. Attributing a change to a compound while losing weight is confounded by design.

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u/tidy_vialdrawer_watch7 points·28 days ago

Not convinced by the attribution. Weight loss alone moves that marker and you have no way to separate the two.

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u/intent_to_treat10 points·28 days ago

Careful — that is a question for whoever ordered the panel, and nobody in this thread can answer it responsibly.

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u/santiago_szabo2 points·28 days ago

baseline before you start is worth more than any later panel

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u/noor_hovland5 points·28 days ago

assay method matters, especially between different labs

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u/pavel_nkemelu3 points·28 days ago

draw at the same point in the week if you want comparability

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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.

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