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Test Name: Ethosuximide (Zarontin), Serum
Test Code: 007443
Other Names: N/A
Test Includes: Ethosuximide (Zarontin), Serum
Specimen Requirements: Serum OR plasma, 1 mL
Container: Red-top tube, lavender top (EDTA ) tube OR green-top (heparin) tube. DO NOT USE A GEL-BARRIER TUBE. The use of gel-barrier tubes is not recommended due to slow absorption of the drug by the gel. Depending on the specimen volume and storage time, the decrease in drug level due to absorption may be clinically significant.
Collection Instructions: Transfer separated serum or plasma to a plastic transport tube. Oral: peak: two to four hours after dose; trough: immediately prior to next dose. Peak or trough levels may be used to monitor therapy because blood levels are fairly constant.
Stability: Refrigerate
Rejection Criteria / Special Instructions: State other drugs taken by patient.
Methodology: Immunoassay