Laboratory Test Detail

Last Updated: July 22, 2024 @ 9:13 am



  • One Red Top

Also Acceptable:
  • One Gray Top
  • One Green Top (Li Heparin)
  • One Green Top (Na Heparin)
  • One Lavender (EDTA)
  • One Pink Top (EDTA)
  • 1 mL (Min:0.5 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.

Also Acceptable:
  • 1 mL (Min:0.5 mL) Plasma . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling:
  • Allow specimen to clot completely at room temperature
  • Avoid Repeated Freeze/Thaw Cycles
  • Separate from cells ASAP
  • State patient's last dose in hours.
Rejection Criteria:
  • Use of separator tubes.
Stability:Ambient: 8 Hour(s); Refrigerated: 1 Month(s); Frozen: 3 Month(s); Incubated: Unacceptable
  • Immunoassay
Reported:1-3 Day(s)
CPT Codes:
  • 80185
Interpretive Data:Please see report for interpretive data.
Phenytoin is potentially toxic at levels greater than 20.0 ug/mL.
  • 2714 - PHENYTOIN
  • 2920 - LAST DOSE
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