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c/bloodwork·posted 1 year ago by u/thyroid_tangent

[Question] how do you actually verify ALT

Question Long Haul ×6 Clean Column ×1 Well Actually ×1

Trying to settle this properly because the thread from last year went in circles.

The claim: bloodwork matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 9 months without either producing anything.

What would actually settle it is 11 people measuring the same thing the same way. I have started; my numbers are below. They lean one way but not strongly enough for me to declare victory.

If you have data, post the data. If you have an opinion, flair it as an opinion.

3,181 up / 88 down97% upvoted26 commentsid 1hv2ik9 Jul 2025

26 comments

23 in this archive, depth 5

best — the order this archive was captured in

u/britt_marchand290 points·1 year ago

Mechanistically the bit that matters is ALT. It explains most of the early profile and a decent chunk of the outcome.

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u/noor_cardoso99 points·1 year ago

Respectfully this is a sample of one presented as a finding.

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u/thyroid_tangentOP52 points·1 year ago

This is correct. ApoB is the better marker.

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u/jarno_karlsen29 points·1 year ago

eGFR noise during rapid loss is expected

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u/diego_almeida177 points·1 year ago

ALT is where the fatty-liver story shows up first

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u/kenji_kimani134 points·1 year ago

The confident tone is doing a lot of work that the evidence is not.

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u/thyroid_tangentOP98 points·1 year ago

Respectfully this is a sample of one presented as a finding.

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u/liver_enzyme_lizMOD116 points·1 year ago

Retitled to remove editorialising. Put the evidence in the body.

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u/thyroid_tangentOP-8 points·1 year ago

My fasting insulin went from 14 to 37 in 44 weeks. The eGFR story shows up in the trend, not the single number.

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u/employer_carveout96 points·1 year ago

Ferritin tanked from 10 to 9. Small appetite, reduced iron intake, nobody was testing it until I asked.

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u/andres_restrepo33 points·1 year ago

ALT is where the fatty-liver story shows up first

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u/transit_variance53 points·1 year ago

Ferritin tanked from 10 to 9.

Disagree on that part. 98.4% and 98.3% on the same vial is normal.

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u/kofi_balogun30 points·1 year ago

Strongly agree. ALT is where you catch the liver story early.

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u/a1c_arcT2D36 points·1 year ago

eGFR noise during rapid loss is expected

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u/copay_card_cc8 points·1 year ago

A1c moves slowly, quarterly is plenty

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u/ravi_sandvik40 points·1 year ago

Retitled to remove editorialising.

Yes, exactly this, and it is the bit that took me 57 weeks to accept.

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u/yara_boateng0 points·1 year ago

eGFR from 13 to 15 is movement, not noise

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[removed]1 point·1 year ago

[removed by moderator]

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u/gentle_correctionnice about it1 point·1 year ago

I am going to push back on this slightly.

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u/no_refunds_nr19 points·1 year ago

baseline is the most important ferritin measurement, you cannot collect it later

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u/nikhil_asante77 points·1 year ago

My hs-CRP went from 11 to 14 in 57 weeks. The ALT story shows up in the trend, not the single number.

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u/employer_carveout25 points·1 year ago·edited

This is correct. ApoB is the better marker.

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u/nikhil_asante31 points·1 year ago

post reference ranges with your numbers, units differ by country and lab

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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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