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HelpTest Code ACMP Acetaminophen
Additional Codes
| Epic Ordering Code | LBC01309 |
| NBS code | LAB43 |
| Service code | 31801 |
Specimen Requirements
Submit the following:
| Preferred: | Acceptable: |
|
Gold top |
Green Top (Li Heparin) |
Processing Requirements
Allow specimen to clot for 30 mins (Gold top) and centrifuge within 2 hours
Specimen type: Serum/Plasma
Volume: 0.5 mL
Storage/transport requirements: Refrigerated
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 24 hours |
| Refrigerate | 24 days (Preferred) |
| Frozen | 50 days |
Specimen Condition
| Gross Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Gross Lipaemia | Alert/Reject |
| Others | Not applicable |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Toxic concentrations |
|---|
| > 50 mg/L after 12 hours |
| > 100 mg/L after 8 hours |
| > 200 mg/L after 4 hours |
Refer to Matthew Rumack normogram for specific timings.
Critical value: > 200 mg/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Determination of toxicity
Update
Last updated 29/05/2026
Alias
Paracetamol
Tylenol
LOINC Code Information
3298-7