How most laboratories arrive at your LDL: they do not measure it, they calculate it. Here is the arithmetic they use.
| Result | Band |
|---|---|
| Under 100 mg/dL | Optimal |
| 100 to 129 mg/dL | Near optimal |
| 130 to 159 mg/dL | Borderline high |
| 160 to 189 mg/dL | High |
| 190 mg/dL and above | Very high |
Friedewald equation, valid only for fasting samples with triglycerides under 400 mg/dL. Bands follow the widely used NCEP ATP III categories.
BloodMarker reads your whole panel and tells you what the lines say together, which is the part no single calculation can do.
Your values carry over · PDF or a photo · about 8 seconds
On most standard panels it is calculated with this equation rather than measured directly.
It becomes unreliable as triglycerides rise and is not used at all above 400 mg/dL. It also underestimates LDL at low LDL levels.
Not medical advice. These calculators are for information only. Reference bands differ between laboratories and none of these numbers can be interpreted without your history, your other results and a clinician. Nothing you type here is sent to us or stored on a server.