Paracetamol Test
- Category
- Drug Monitoring
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 8 days
- Fasting
- No Fasting
- Age
- 5+ Years
What Is This Test?
Measures the level of paracetamol (acetaminophen) in the blood.
Why this test is performed?
Mainly used after a suspected overdose: the level, together with the time since the tablets were taken, tells doctors whether the antidote (N-acetylcysteine) is needed to prevent serious liver damage.
Who should take this test?
People taking this medicine, to check the dose is safe and effective — as advised by the doctor.
Test Preparation
No fasting is needed. Note the exact time the tablets were taken, as it is needed to interpret the result.
Medical disclaimer · for information only, not medical advice
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
Read our Editorial Policy and Medical Review Process.
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Frequently asked questions
Yes — suspected paracetamol overdose needs urgent hospital care even if the person feels well.
No fasting is needed. Note the exact time the tablets were taken, as it is needed to interpret the result.
Blood sample taken from a vein in your arm.
Usually within 6–7 days after the sample reaches the lab. You will receive the report online.
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