Specimen Collection Manual and Test Catalog
CARBAMAZEPINE AND METABOLITE, SERUM/PLASMA
Geisinger Epic Procedure Code: LAB3134 Geisinger Epic ID: 19189Serum or plasma
2 mL aliquot of serum or plasma; minimum 0.7 mL.
Do not use serum separator tubes.
Obtain serum by drawing blood into an evacuated tube without anticoagulant and with a noncoated interior. Allow 20 minutes for clotting. Centrifuge and immediately separate serum or plasma specimens from the cells into clean, plastic, screw-capped vial(s).
Refrigerated, frozen or room temperature.
Room Temperature: 14 days. Refrigerated: 14 days. Frozen: 10 months (-20°C).
The use of serum separator tubes is not acceptable. Submission of serum separator tube will result in cancellation
Carbamazepine - Total 4.0-12.0 mcg/mL
Carbamazepine Metabolite 0.2-2.0 mcg/mL
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Carbamazepine and its metabolite (10,11-carbamazepine epoxide).
EPOX, Carbemazepine And Metabolite Epoxide Total, Quest test code 26513
Carbamazepine and its metabolite (10, 11-carbamazepine epoxide) are widely used for control of generalized tonic-clonic, partial-onset, complex and mixed seizure disorders. The metabolism of carbamazepine in epileptic patients has several different pathways that can be altered when the patient is co-medicated with other anticonvulsants and, therefore, its therapeutic level should be monitored along with its metabolite in their free and protein bound states.