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Test Code LAB4000 ACETAMINOPHEN LEVEL

Specimen Type

Preferred Specimen: Lithium Heparin Plasma (Light Green Top Tube)

Alternative Specimens: Serum (SST, Gold, Tiger, Red Top Tube)

Collection Instructions

Draw peak specimen 1 hour post IM dose or 1/2 hour post IV infusion.

Specimen Volume

1 mL

Minimum Volume

0.5 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily and STAT

Sample Stability

Room Temp: 24 hours
Refrigerated: 24 days
Frozen: 50 days

Specimen Processing

Centrifuge tube ASAP.

Method

Photometric

Reference Ranges

Acetaminophen µg/mL

    Normal:  Less than 30 µg/mL

Normal therapeutic doses of acetaminophen result in serum concentrations of 10-30 µg/mL in healthy adults.

Toxicity is generally reported at concentrations over 150 µg/mL at 4 hours and 4.7 µg/mL at 24 hours, which is considered the possible toxicity line. 

Critical Range

>150 µg/mL

Synonyms

Tylenol, APAP, Acephen

Test Components

Acetaminophen, µg/mL.

IMO Code

IMO-PROC-30991892

CPT Codes

80143