Sign in →

Test Code VALP Valproic Acid in Serum

Specimen Type

Serum

Container

Red top

Preferred Volume

5 mL

UCMC Collection Instructions

Peak level:    30 min after completion of dose
Trough level:  30 min before next dose

Availability

24/7

Turnaround Time

4 hours

STAT Availability

Available

Test Usage

Useful for monitoring therapy, assessing compliance and evaluating potential toxicity

Test Methodology

Homogeneous Enzyme Immunoassay Technique (EMIT)

CPT Code

80164

STAT Turnaround Time

1 hour

Minimum Volume

1 mL

Reference Range

therapeutic range: 50 – 100 µg/mL

Critical Results

>200 µg/mL

Test Limitations

Co-administration of other anti-epileptic drugs can significantly affect valproic acid metabolism. 
Several factors complicate interpretation of valproic acid  levels, including time interval between drug administration and blood sampling, the type of seizures treated, albumin concentration and factors affecting albumin binding of valproic acid , and the presence of other anti-epileptic drugs and pharmacologically-active metabolites of valproic acid

Test Includes

Quantitative determination of valproic acid in human serum

Fee Code

43683

Synonyms

depakote