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HelpTest Code ETX Ethosuximide, Serum
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL Serum
Collection Instructions:
1. Within 2 hours of collection, centrifuge the specimen.
2. For serum gel tubes, serum may sit on the gel or be aliquoted into a plastic vial.
3. For red top tubes, aliquot serum into a plastic vial immediately after centrifugation.
Children's Mercy Hospital
Note:
CMH COLLECTION: 2 mL in red gel vacutainer
Specimen Minimum Volume
Serum: 0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 14 days |
| Frozen | 28 days | |
| Ambient | 14 days |
Useful For
Monitoring ethosuximide therapy
Determining compliance
Assessing ethosuximide toxicity
Reject Due To
| Gross hemolysis | Reject |
Day(s) Performed
Monday through Saturday
Report Available
Same day/1 dayReporting Name
Ethosuximide, SReference Values
Therapeutic: 40-100 mcg/mL
Critical value: >150 mcg/mL
Method Name
Enzyme-Multiplied Immunoassay Technique (EMIT)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
80168