Test Name: Acetaminophen
Health Link Test Code: GM2485
LIS Test Code: ACTM
CPT Code(s): 80307
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: 4 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Red top
Also Acceptable: Green top (with lithium heparin anticoagulant)
Collection Volume: 1 mL
Pediatric Collection Volume: 0.4 mL
Sample Analyzed: Serum or plasma
Testing Volume: 0.5 mL
Pediatric Testing Volume: 0.2 mL
Centrifuge. Transfer cell-free serum/plasma to plastic vial. Refrigerate.
Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.
Specimens collected in red cap with yellow ring (SST) or green cap with yellow ring (PST) tubes are not acceptable.
|Generally effective therapeutic concentration:||10-30 ug/mL|
|Toxic:||> 150 ug/mL|
Critical Calls: yes
If time of ingestion is unknown, samples taken 4 hours apart will give a better indication of whether toxicity exists. The concern in acetaminophen ingestion is whether:
1. The blood concentration is increasing or decreasing
2. The blood concentration is at a level which
represents a threat of irreversible liver damage
3. The potentially toxic antidote should be given.
This test is performed using a modification of an FDA approved method. The performance characteristics of this test were determined by the UWHC Clinical Laboratories and meet the standards for clinical testing.