Laboratory Test Information Guide

Details for Acetaminophen

Test Name: Acetaminophen
Alternate Name(s): Tylenol
Tempra
Paracetamol
Laboratory: Core UH & VH
Specimen Type: 4.5 mL Green top Vacutainer

Pediatric:
0-2 yrs: Green 0.6 mL pk.
2-10 yrs: 2 mL Green top
Collection Information: Collect blood aseptically in a Vacutainer tube.

Serum from a 5 mL Gold top or 6 mL Red top Vacutainer tube is also acceptable.
Requisition: GENERAL LABORATORY REQUISITION
Test Schedule: As required
Turnaround time from when specimen
is received in testing laboratory:
 
Routine
4 hours
Stat
1 hour
 
Reference Range: 
Therapeutic:
70-130 µmol/L
Toxic Levels:
4 hr. after ingestion:
>990 µmol/L
12 hr. after ingestion:
>260 µmol/L

Please interpret acetaminophen results with great caution as bilirubin has been found to significantly interfere with this method (artifactually elevates the results)
Effective Date: 2010-08-04
Revised Date: 2014-02-25
Critical Value: > 260 µmol/L
Interpretive Comments: A non-salicylate analgesic-antipyretic drug. When serum concentrations are above these values at the specified times following the time of ingestion, the patient is at risk of liver damage and antidotal therapy with N-acetylycysteine should be instituted.
Special Processing:  
Comments:  
Method of Analysis: Enzymatic rate
Critical Information Required:  
Storage & Shipment:  
System Codes: 
Cerner
ACETA
 
Referred To:  

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