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Test performed at:

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Acetaminophen: (Tylenol, Datril, Phenacetin, Paracetamol)

Test Name

Acetaminophen: (Tylenol, Datril, Phenacetin, Paracetamol)

Red Tube Specimen Type / Requirements

Container Type = 1 Red Top

Minimum Volume = 3 mL Serum

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions: Collect sample in red top tube. Avoid gold top (SST). When evaluating for possible toxicity, sample should be drawn 4-6 hour post-ingestion. Collect a second sample three to four hours later. Write your initials, date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: Separate samples from cells as soon as possible. Repeated freezing and thawing of samples should be avoided.

Rejection Criteria: Gel separator, unlabeled or Not Sufficient Quantity samples will be rejected.

Stability: Stable refrigerated for 7 days.

Transportation: Send sample to core lab as soon as possible.

Required Documentation

Turnaround Time (TAT)

1 hour for Trauma / Stat
2 hours for routine

Test Utilization

Reference Value

Therapeutic: 20-132 umol/L

Toxic: 4 h post > 132umol/L

Toxic: 8hr post > 662umol

12 h post > 331 umol/L

Test Code



Enzymatic / Colorimetric

Testing Location


Other Information

Last Updated: November 07, 2019