do you fast for the full 12 hours or is 8 enough
#bloodwork 2026-04-03
Friday50 messages12 participantstimes are UTC
Highlights from this day
- fridge_thermo — if you only get one thing, get a fasting insulin. it is the one that becomes impossible later 18:19
- mg_per_ml — most of the lipid improvement in my panel tracked the weight, not the drug 18:46
- mg_per_ml — a small egfr dip is often dehydration. rehydrate and retest before you panic 18:48
fasting insulin came back higher than i expected, what does that actually mean
if a result frightens you, that is a conversation with a clinician. we will help you read it, we will not tell you it is fine
fasting insulin
sorry to jump in apob is the better marker and it is harder to get. i track both because i can only get one reliably
*Medutest not the other one
Recon calculator: 20mg in 2.5ml = 4mg/ml.
my alt has come down a lot since i started losing, is that expected
if you only get one thing, get a fasting insulin. it is the one that becomes impossible later
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thats a big move
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genuine question an isolated lipase a bit over range with no symptoms is usually nothing. lipase with severe pain is not
thats normal
the FLOW result is why my nephrologist changed her position on this entirely
most of the lipid improvement in my panel tracked the weight, not the drug
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a small egfr dip is often dehydration. rehydrate and retest before you panic
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crp is worth adding if you can, it moves in a useful direction on this
what would make you stop and go and see somebody rather than post here
get fasting insulin at baseline. you cannot go back and get it once you have started
i pay privately for fasting insulin because nobody will order it for me otherwise
nobody here is reading your bloods as a clinician. we are reading them as people who have had a lot of bloods
baseline, three months, then twice a year is what i settled on
lab error maybe
do you get bloods every 8 months or only when something changes
ferritin is low, is that the drug or the not eating
thyroid moving slightly is common enough that i would repeat it before doing anything
crp is worth adding if you can, it moves in a useful direction on this
alt and ast coming down as you lose liver fat is common and is a good sign
| Test | Why now |
|---|---|
| Fasting insulin | impossible to get a true baseline afterwards |
| Full lipid panel with apoB | the comparison is the whole point |
| HbA1c | 90-day average, so it lags your start |
| CMP + CBC | cheap, and the reference for everything after |
| Ferritin, B12, TSH | these fall quietly on a low intake |
see somebody
how much does the lipid panel move just from losing weight
good numbers
my potassium came back weird and the retest was normal, whats that about
post the numbers
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probably dehydration
is crp worth adding to the panel
too early for a1c
sorry to jump in the most useful thing i did was get a full panel before i started. everything since has been comparable, take that with a pinch of salt
mine did the same
peptidemeter-summary-g-0641.pdf
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ferritin and b12 fall quietly when you are barely eating. check them twice a year
coming back to this homa-ir is fasting glucose times fasting insulin over a constant. the constant differs by unit system
a1c is a ninety day average. retesting at week six tells you almost nothing
nobody here is reading your bloods as a clinician. we are reading them as people who have had a lot of bloods
apob if you can
coming back after 1 months, what changed in your numbers
a single weird electrolyte is very often a handling artefact. retest before you worry
update from 12 months ago: a1c down, apob unchanged, and i am genuinely annoyed about the apob
if your glucose is in mg/dL the divisor is 405. if it is mmol/L it is 22.5
slightly off topic but nice a1c
fast properly or do not bother. an eight hour fast and a twelve hour fast are different tests
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thats the 90 day thing
see somebody
anyone had a result that turned out to be a lab error
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thats the 90 day thing