unpopular opinion: most of what gets said here about lipids are guesswork
unpopular opinion: most of what gets said here about lipids are guesswork, which sounds obvious until you try to state the evidence for it.
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.
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.
Corrections welcome, especially the pedantic ones. Pedantry is how this board earns its reputation.
best — the order this archive was captured in
Identifying header cropped from the report above. Post the values, not the name and reference number.
Yes — same lab, same fasting state, same rough time of day, or the comparison is doing nothing.
bring the numbers to someone qualified to read them
a single triglycerides outside range is a reason to repeat, not to panic
Why so many single values look alarming and turn out to be nothing.
A reference interval is built to contain about 95% of a healthy reference population, so one test in twenty falls outside one by construction. Add biological variation, assay imprecision, fasting state and time of day, and a genuinely stable person will produce occasional out-of-range results.
That is why repeat testing before acting is standard. Regression to the mean handles most of it. None of which means an out-of-range value should be ignored — it means it should be repeated and taken to somebody who can put it in context, which is emphatically not a ranked feed.
That comparison crosses two labs with different assays. The difference you are describing may be the method.
assay method matters, especially between different labs
assay method matters, especially between different labs
Adding the obvious one — take it to whoever ordered the panel. This board cannot read it for you.
Agreed on assay changes. A lab switching platforms between your draws is invisible unless you ask.
Not convinced by the attribution. Weight loss alone moves that marker and you have no way to separate the two.
Added ApoB to the panel after a thread here. It told me something the standard lipid panel had been hiding.
ApoB is the one worth adding if you only add one
Same lab as the previous draw?
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.
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.
Correction: that marker is reported in different units by different labs, which explains the tenfold difference you are seeing.
- 1Agreed on assay changes. A lab switching platforms between your draws is…6 comments in this branch · started by u/britt_marchand