Paracetamol level
What this test measures
A paracetamol level is measured after an overdose or accidental excess, timed from the moment the tablets were taken, to decide whether the antidote is needed.
Why doctors request it
Measured in emergency departments at four hours or more after ingestion.
What commonly pushes it up
- Recent paracetamol ingestion
What commonly pushes it down
- Time since ingestion
Everyday reasons for a value outside the range
- The level means nothing without the time since ingestion, which is read off a treatment graph by the treating team
- Therapeutic use gives low, detectable levels
About the sample
Four or more hours after ingestion, with the time recorded.
Upload a photo or PDF and see every line against the range your lab printed, explained in plain English. First report free.
Read my report freeThis is an educational summary of results you uploaded. It is not medical advice, a diagnosis or a treatment plan, and it does not replace the doctor who requested the test. If you are worried, or a result is marked outside range, discuss it with your doctor. Written and reviewed by a UK consultant physician. Reference ranges vary between laboratories.