Test Code

Alias/See Also

CPT Codes

Preferred Specimen


Minimum Volume
0.5 mL

Other Acceptable Specimens
Lithium Heparin Plasma (green top tube)


Acetaminophen specimens should not be drawn earlier than four hours after ingestion.  If the time of ingestion is not known, two or more blood samples taken at two three-hour intervals may be used to estimate acetaminophen half-life and assess toxicity.

Transport Container

Serum (gold top) tube or Lithium Heparin Plasma (green top) tube

Transport Temperature
Refrigeration or Room Temperature

Specimen Stability
Room Temperature - 5 days; Refrigerated: - 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Quantity Not Sufficient, IV contamination


Setup Schedule

Daily upon receipt

Report Available
Upon completion of analysis

Reference Range

Therapeutic Range: 10 - 30 ug/L

Clinical Significance

Acetaminophen is a commonly used therapeutic drug with analgesic and antipyretic properties. Acetaminophen measurements are useful in the diagnosis and treatment of acute overdose, which can result in severe hepatotoxicity and nephrotoxicity.

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.