Ordering Recommendation

Aid in the assessment of acetaminophen toxicity.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Plain red.

Specimen Preparation

Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.5 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Plasma. Specimens collected in separator tubes, sodium fluoride/potassium oxalate, or sodium citrate anticoagulants.

Remarks
Stability

After separation from cells: Ambient: 2 weeks; Refrigerated: 2 weeks; Frozen: 45 days

Methodology

Spectrophotometry

Performed

Sun-Sat

Reported

Within 24 hours

Reference Interval

Test Number
Components
Reference Interval
  Acetaminophen 10-30 µg/mL

Interpretive Data

Acetaminophen concentrations greater than 150 µg/mL at 4 hours after ingestion and 40 µg/mL at 12 hours after ingestion are often associated with toxicity.

Acetaminophen levels drawn within 4-6 hours after IV administration of a standard loading dose of 150 mg/kg of N-acetyl cysteine may be falsely low due to interference with the assay.

Compliance Category

FDA

Note

Hotline History

N/A

CPT Codes

80143

Components

Component Test Code* Component Chart Name LOINC
0090001 Acetaminophen 3298-7
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Datril
  • Tylenol
  • Tylenol level
Acetaminophen