Specimen:
Collect
- One Red Top
Also Acceptable:
- One Blue Top (Na Citrate)
- One Gray Top
- One Green Top (Li Heparin)
- One Green Top (Na Heparin)
- Four Lavender (EDTA)
- One Pink Top (EDTA)
- One SST
Submit
- 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- Allow specimen to clot completely at room temperature
- Avoid Repeated Freeze/Thaw Cycles
- Separate from cells ASAP
- State Patient's Last Dose
- For trough level specimens should be collected just before next scheduled dose. Peak is 1-3 hours after oral dose.
SST ONLY STABLE UP TO 24 HOURS.
State patient's last dose in hours.
Stability
Ambient: 2 Hour(s); Refrigerated: 2 Day(s); Frozen: 12 Month(s); Incubated: Unacceptable
Methodology
- Immunoassay
Performed
Mon-Fri
Reported
1-3 Day(s)
CPT Codes
- 80164
Interpretive Data
Please see report for interpretive data.
Valproic acid serum concentrations of 50 - 100 µg/mL effectively control generalized and partial seizures in most patients.
Seizure control may improve at levels greater than 100 µg/mL, but toxicity may occur at levels of 100 - 150 µg/mL.
Valproic acid serum concentrations of 50 - 100 µg/mL effectively control generalized and partial seizures in most patients.
Seizure control may improve at levels greater than 100 µg/mL, but toxicity may occur at levels of 100 - 150 µg/mL.
Components
- 2711 - VALPROIC ACID
- 2911 - LAST DOSE
Last Updated: April 30, 2025 @ 9:13 am
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