Serum or plasma concentration of amphetamine

Why This Test Might Be Ordered

Your healthcare provider may order this test if you’ve been exposed to amphetamine—whether through prescription use, recreational use, or accidental ingestion. It could also be part of a broader evaluation for suspected drug intoxication, overdose, or monitoring treatment for conditions like ADHD.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample (usually from a vein in your arm) or, less commonly, urine. If you’re taking medications or have recent medical conditions, let your lab technician know to avoid potential interference.

What the Results Mean

Results show the concentration of amphetamine in your blood or urine. High levels may indicate recent use, while very low or undetectable levels suggest no recent exposure. Interpretation depends on clinical context, such as your medical history or reason for testing.

Common Reasons for Testing

This test is often used in cases of suspected drug abuse, workplace or legal investigations, or when managing conditions like ADHD where amphetamine medications are prescribed. It can also help assess acute toxicity or guide treatment adjustments.