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HelpTest Code ACETA Acetaminophen
Useful For
Acetaminophen is an analgesic, antipyretic drug. It rarely requires therapeutic monitoring, but is frequently found in overdose cases, particularly accidental ingestion in children. With large doses, liver toxicity can result.
Levels most accurately predict toxicity when sample is drawn between 4 and 12 hours after ingestion. Samples drawn less than 4 hours after ingestion may be misleading, as the peak concentration has not been reached.
Synonyms/Keywords
Datril, Tylenol
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Plasma/Serum | Lithium-heparin Plasma Separator Tube (PST) |
Serum Separator Tube (SST)
Red Top Tube (RTT)
Lithium or Sodium-heparin Green Top Tube (GTT) EDTA Lavender Top Tube (LTT) |
0.5 mL | 0.3 mL |
Collection/Processing Instructions
Serum/Plasma must be separated from cells within 2 hours of collection.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum/Plasma | Ambient | 8 hours |
| Refrigerate | 7 days | |
| Frozen | >7 days |
Interpretations
Liver damage is likely if >50 ug/mL at 12 hours or >200 ug/mL at 4 hours.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| All Performing Sites |
Therapeutic Range: <10 ug/mL |
|
See Critical Value List for list of current critical values |
|
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Beaver Dam | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Weston | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Eau Claire | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Park Falls | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Ladysmith | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Rice Lake | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Marshfield | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Minocqua | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Neillsville | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
| Stevens Point | Monday through Sunday | Less than 2 hours | Emit* Tox Rate Assay/Beckman AU |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 80143 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 80143 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Acetaminophen Level |