91179      Phenytoin, Free and Total
Specimen:
  Collect: One 10 mL Red Top

Also Acceptable
One 7.5 mL SST 
  Submit: 2 mL (Min:1 mL) Serum. Submit Refrigerated. Submit in a Standard Transport Tube.  
  Special Handling: Separate from cells ASAP
SST: Serum in a gel separator tube stored at room temperature is acceptable if separated from the gel within 2 hours. Serum in a gel separator tube stored refrigerated is acceptable if separated from the gel within 1 hour.

 
  Stability: Ambient: 4 Day(s); Refrigerated: 4 Day(s); Frozen: 1 Month(s); Incubated: Unacceptable 
Methodology: Quantitative EMIT Immunoassay  
Performed: Sun-Sat 
Reported: 2-3 Day(s) 
CPT Codes:
8018580186
Interpretive Data: Please see report for interpretive data.
Components:
93265 - FREE PHENYTOIN93272 - % FREE PHENYTOIN
93273 - TOTAL PHENYTOIN