COVID-19 information for patients and families

To help protect our people, patients and communities, we are screening everyone who enters our main hospital buildings. Some of our entrances may be closed or have reduced access.

Please check our COVID-19 information page for more updates before coming to our sites.

Text size: a a a

Test performed at:

St Mikes logo
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