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General Information

Placing Lab Orders

Collecting Lab Specimens

Lab Section-Specific Information

 

 

Mayo Clinic Laboratories

Acetaminophen Level

eD-H Order Code

LAB43

Specimen Collection Information

Specimen Minimum Test Volume Container Special Handling
Blood 0.1 ML  

Specimen Transport Temperature

Refrigerated

Reference Ranges / Critical Values

Assay Gender Age Range Normal Range Critical Values Units
Acetaminoph Lvl All 0 Minutes – 150 Years 5 -30 >50 mg/L

Specimen Stability


Chemistry Blood and Urine Analyte Stability Chart

Additional Specimen Instructions

Acetaminophen is readily absorbed from GI Tract. Peak plasma levels after oral administration reached
In 1/2-1 hours. Plasma half-life is normally around 3 hours. If half-life exceeds 4
hours during acute poisoning, hepatic necrosis occurs. Two specimens should be drawn
about 4 hours apart to determine half-life.

Interpretive Data

Assay Display Interpretive Data
Acetaminoph Lvl Levels >150 mg/L at 4 hours post ingestion are often an indication for N-Acetylcysteine..

Day(s) Performed

Monday through Sunday; continuously

CPT(s)

80329

Performing Lab Section

Chemistry