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c/bloodwork·posted 11 months ago by u/emeka_chowdhury

[Lab] SGN sema — VendorInvestigate came back 93.7% against a claimed 98.6%

Baseline Long Haul ×7 Well Actually ×2

Long-ish post, sorry. tl;dr at the bottom.

I have been tracking eGFR against eGFR for 37 weeks because I could not find anyone who had. The correlation is weaker than I expected, which is itself mildly interesting given how confidently people link the two in here.

Caveats up front: one person, one lab, one assay, no control, and I changed my training in the middle of it, which was stupid.

tl;dr: probably real, definitely smaller than the threads imply, and not worth reorganising your week around.

2,867 up / 330 down90% upvoted45 commentsid dwnqo28 Aug 2025

45 comments

30 in this archive, depth 6

best — the order this archive was captured in

u/andres_restrepo372 points·11 months ago

What are your reference ranges?

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u/britt_marchand300 points·11 months ago·edited

ALT is where the fatty-liver story shows up first

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u/emeka_chowdhuryOP191 points·11 months ago·edited

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

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u/anya_rautio60 points·11 months ago

the 10 month eGFR check is the routine

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u/transit_variance184 points·11 months ago

Do you have baseline to compare to?

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u/micro_bump_mick267 points·11 months ago

ferritin tanks quietly on a reduced appetite, check it

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u/janek_ferrari113 points·11 months ago·edited

Half-life is about 168 hours, so steady state lands around week 19–5. Practical consequence: what you feel in week 1 is not what that dose does.

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u/emeka_chowdhuryOP80 points·11 months ago

Baseline TSH: 99.3. Week 83: 95.1. Same lab, fasted, same time of day. Trend matters.

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u/emeka_chowdhuryOP40 points·11 months ago

Yeah, baseline matters more than any later number.

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u/lina_almeida22 points·11 months ago

ApoB from 2 to 23 is movement, not noise

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u/employer_carveout14 points·11 months ago

nobody here can tell you what a result means for you

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u/edit_for_clarity11 points·11 months ago

nobody here can tell you what a result means for you

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/coring_the_stopper-23 points·11 months ago

A1c moves slowly, quarterly is plenty

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u/ravi_sandvik1 point·11 months ago

Not to be pedantic but ferritin and ApoB are being used interchangeably and they are not interchangeable in real life.

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u/thermal_mass_tom85 points·11 months ago

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

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u/nnt_nate0 points·11 months ago

eGFR noise on rapid loss is real. 3 week noise, 10 week trend. Do not panic at week 55.

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u/lipid_panel_larrybloodwork1 point·11 months ago

What are your reference ranges?

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u/bence_zamora0 points·11 months ago

baseline is the most important A1c measurement, you cannot collect it later

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u/isabela_guerrero1 point·11 months ago

ferritin tanks quietly on a reduced appetite, check it

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u/gentle_correctionMOD56 points·11 months ago

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

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u/anya_rautio26 points·11 months ago

ferritin tanks quietly on a reduced appetite, check it

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u/ahmed_fonseca36 points·11 months ago

A1c moves slowly, quarterly is plenty

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u/nabila_bakken21 points·11 months ago

triglycerides from 2 to 7 is movement, not noise

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u/edit_for_clarity8 points·11 months ago

ApoB over LDL-C, that is the hierarchy

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u/santiago_rasmussen33 points·11 months ago

You have restated the marketing copy. What is the actual substance here.

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u/elise_grimaldi25 points·11 months ago

Rodent data is rodent data. Dose scaling is not linear and the models tell you what to investigate, not what to expect.

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u/gentle_correctionnice about it8 points·11 months ago·edited

That is net peptide content, not purity. Different number, different meaning.

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u/diego_sorensen6 points·11 months ago

eGFR noise during rapid loss is expected

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u/india_generic_g7 points·11 months ago

HOMA-IR is crude but free and useful for tracking

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[deleted]3 points·11 months ago

[deleted]

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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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