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c/bloodwork·posted 8 months ago by u/elise_grimaldi

what would you tell week-1 you about lipids

Concerning Long Haul ×6

Question in the title, detail here: what would you tell week-1 you about lipids.

Reference intervals are typically the central 95% of a reference population. By construction one person in twenty falls outside one on any given test without anything being wrong.

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.

949 up / 293 down76% upvoted13 commentsid 1hrx0l3 Nov 2025

13 comments

10 in this archive, depth 6

best — the order this archive was captured in

u/gentle_correctionnice about it62 points·8 months 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/nnt_nate35 points·8 months ago

ApoB counts atherogenic particles rather than the cholesterol they carry, which is why it can diverge from LDL-C and why it is the addition most worth making.

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u/lipid_panel_larryMOD18 points·8 months ago

Retitled — the original asserted a causal claim the post does not support.

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u/bac_water_banditreconstitution0 points·8 months ago

Retitled — the original asserted a causal claim the post does not support.

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

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u/elise_grimaldiOP1 point·8 months ago·edited

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

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u/liver_enzyme_liz1 point·8 months ago

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

Adding the obvious one — take it to whoever ordered the panel. This board cannot read it for you.

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u/leila_vasquez1 point·8 months ago

Adding the obvious one — take it to whoever ordered the panel.

Disagreeing with this bit: that change is confounded by the weight loss itself and cannot be attributed.

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u/intent_to_treat9 points·8 months ago·edited

Same view — ApoB if you add one thing. It answers a question the standard panel only gestures at.

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[removed]25 points·8 months ago

[removed by moderator]

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u/leila_vasquez-19 points·8 months 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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