[PSA] lipids are not what most of this community thinks it is
The one-line version is the title: lipids are not what most of this community thinks it is. The rest is why.
Brought the whole set to my clinician rather than one flagged value. Completely different conversation.
How to make a panel worth comparing, which is most of the value people leave on the table.
Standardise the conditions: same lab, same fasting state, same rough time of day, same point in the week, similar hydration. Take a baseline before you change anything. Repeat any surprising value before acting on it. Change one thing at a time if you want to attribute anything to it.
Do that and a year of panels is a trend. Skip it and a year of panels is a collection of unrelated mornings, which is what most of the alarmed posts here are actually describing.
Panicked about a single result, posted here, got told to repeat it, repeated it, and it was fine.
Screenshot none of this. Read the whole thread, including the parts where I am told I am wrong.
best — the order this archive was captured in
Retitled — the original asserted a causal claim the post does not support.
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.
What did the repeat show?
That is a non-fasting value and the interval you are comparing it against is a fasting one.
Same view — ApoB if you add one thing. It answers a question the standard panel only gestures at.
Careful — that is a question for whoever ordered the panel, and nobody in this thread can answer it responsibly.
Added ApoB to the panel after a thread here. It told me something the standard lipid panel had been hiding.
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.
How many weeks between the two measurements?
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.
Do you have a baseline from before you started?
Cosigning on baseline. The panel I regret most is the one I did not take before starting.
weight loss itself moves several of these independently
Disagree with reading anything into that. One value, one morning, and you changed two other things in the same window.
Agreed on assay changes. A lab switching platforms between your draws is invisible unless you ask.
one measurement is a point, two is a line, three is a trend
bring the numbers to someone qualified to read them
Is that the same assay, or did the lab change platforms?
Have you taken this to whoever ordered it?
Repeat testing before acting is standard practice for a reason: regression to the mean does a lot of work on single outlying values.
fasting state and time of day change more than people expect
This. Reference ranges are population intervals, not targets, and conflating them causes a lot of unnecessary alarm here.
Took a baseline the week before starting purely because this board told me to. Best five minutes I have spent on this.
Took a baseline the week before starting purely because this board told me to.
Adding the obvious one — take it to whoever ordered the panel. This board cannot read it for you.
Fasting or not, and what time of day?
Not convinced by the attribution. Weight loss alone moves that marker and you have no way to separate the two.
Not convinced by the attribution.
heart_rate_bump is right that a reference interval is not a target. It is a description of a population.
Agreed. The trend is the signal. A single value is a snapshot of one morning.
- 1Different laboratories use different assay platforms with different…13 comments in this branch · started by u/jarno_karlsen
- 2Time of day, fasting state, hydration and recent exercise all move common…8 comments in this branch · started by u/neha_rahimi