Acetaminophen

No Gel in Red Top Bullet

Tube Type

Test ID LAB43
EPIC Order ACETAMINOPHEN LEVEL
CPT Code(s) 82003
Group/Individual Test Individual
Laboratory Core Laboratory
Tube Station 30 Routine; 888 STAT
Specimen Routine: 2 mL blood/royal blue top or plain red top;
micro: 300 µL blood/red top pediatric bullet
Stability
Unspun: <4 hours recommended
Spun/Separated:
Room Temperature: 8 hours
Refrigerated: ≤ 3 days
Frozen: ≤45 days.
Availability Routine: 24 hrs/day
STAT: Yes
Turnaround Time STAT 1hr; Routine 2hrs
Reference Range Therapeutic: < 20.0 µg/mL
Critical:
>30 µg/mL
Comments
--Red top tubes must NOT contain Serum Separator Gel

--Must be correlated with time since ingestion
Toxic: Adults, 4 hrs post ingestion >150 µg/mL
           Adults, 12 hrs post ingestion >40 µg/mL
--If time of ingestion is unknown, toxicity can be assessed by using 2 serial levels to calculate elimination T1/2 .

--T1/2 >4h is associated with overdose.

--When extended-release tablets have been used, two levels should be drawn: the first at 4 hrs or more post ingestion, and the second 4-6 hrs after the first.
 
 

Reviewed by jcayless on January 06, 2022

Note: Reference ranges provided on this web site are for guidance only, and may not reflect the most recent changes. Refer to laboratory reports for current reference data.

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514