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c/bloodwork·posted 1 months ago by u/elin_varga

tried A1c for 18 weeks. here is what happened.

Discussion Well Actually ×1 Cold Box ×2

tried A1c for 18 weeks. here is what happened, and I am aware this is a minority view on this board.

18 weeks. Those are measured, not estimated, and not rounded up in my favour.

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.

Tell me where this is wrong. That is the useful part of posting it.

1,175 up / 84 down93% upvoted50 commentsid oe8ja4 Jun 2026

50 comments

25 in this archive, depth 5

best — the order this archive was captured in

u/andres_restrepo93 points·1 months 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/yara_mensah23 points·1 months ago

How many weeks between the two measurements?

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u/elin_vargaOP15 points·1 months ago

Panicked about a single result, posted here, got told to repeat it, repeated it, and it was fine.

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u/liv_okafor5 points·1 months ago

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

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u/elin_vargaOP-10 points·1 months ago

Did anything else change in that window — training, intake, hydration?

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u/bence_zamora19 points·1 months ago

a single ALT outside range is a reason to repeat, not to panic

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u/peptidemeter_pat0 points·1 months ago

a single ALT outside range is a reason to repeat, not to panic

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

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u/peptidemeter_pat77 points·1 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/elin_vargaOP45 points·1 months ago

Same lab as the previous draw?

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u/transit_variance55 points·1 months ago

Do you have a baseline from before you started?

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u/coring_the_stopper83 points·1 months ago

weight loss itself moves several of these independently

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u/a1c_arcMOD33 points·1 months ago

Left up. It is a question about how to compare panels, not a request for interpretation.

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u/andres_restrepo25 points·1 months ago

Repeat testing before acting is standard practice for a reason: regression to the mean does a lot of work on single outlying values.

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u/ahmed_fonseca23 points·1 months ago

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.

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u/cormac_roos18 points·1 months ago

Correction: that marker is reported in different units by different labs, which explains the tenfold difference you are seeing.

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u/emeka_chowdhury7 points·1 months ago

same lab, same conditions, or you are comparing noise

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u/step_therapy_s5 points·1 months ago

Disagree with reading anything into that. One value, one morning, and you changed two other things in the same window.

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u/cormac_erdogan3 points·1 months ago

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

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u/yara_mensah0 points·1 months ago

Correction: that marker is reported in different units by different labs, which explains the tenfold difference you are seeing.

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

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u/andres_restrepo1 point·1 months ago·edited

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

yara_mensah is right that a reference interval is not a target. It is a description of a population.

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u/kaia_kuusela14 points·1 months ago

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.

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u/isabela_guerrero7 points·1 months ago·edited

Reference intervals are typically the central 95% of a reference population.

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

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u/diego_sorensen4 points·1 months ago

ApoB is the one worth adding if you only add one

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u/skip_week_sceptic3 points·1 months ago

That comparison crosses two labs with different assays. The difference you are describing may be the method.

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u/mikkel_ogunleye10 points·1 months ago

Right, and weight loss itself moves several markers, so attribution is harder than these threads assume.

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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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