PHENYTOIN

Mnemonic

DIL

Synonym

Dilantin® - Fosphenytoin®

Specimen Collection Requirements

Collect

Serum or Plasma, one gold (SST), red top tube, green (lithium heparin, PST) top tube, or lavendar EDTA tube

Handling

Allow serum to clot completely at room temperature (minimum: 30 minutes). Centrifuge and separate serum or plasma from cells ASAP.

Preferred Volume

1.0 mL

Minimum Volume

0.5 mL

Transport

Refrigerated (2-8°C)

Stability

AFTER SEPARATION FROM CELLS: Ambient (20-25°C): 4 days; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 1 month

Testing Information

Performed

7 days/week

Method

Enzymatic Immunoassay

Referral Lab

Samaritan Health Services Laboratories

Reference Values

Therapeutic Range

Total:
ADULT: 10-20 µg/mL

Toxic Levels

Total: >30 µg/mL

CPT Codes

80185

Last Updated: Thursday, January 5, 2017 03:42:22 AM