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HelpEPIC CODE: LAB35 Theophylline
ADDITIONAL TEST CODE
Sunquest: THEO
REGIONAL HOSPITAL PERFORMING
UPH Methodist Hospital
Collect
Serum or Plasma collected in Gold (SST), Plain Red or Green Vacutainer Preferred Volume: 6.0mL, Minimum Volume Required 2.0mL
Storage/Transport Temperature
1 mL serum or plasma at 2-8o C.. If Gold SST Gel tube is used for collection, serum must be
analyzed within 24 hours or removed from gel tube for storage.
Separate serum or plasma from cells ASAP
or within 2 hours of collection.
Stability (from collection to initiation)
After separation from cells:
Ambient (room temperature): 7 days; Refrigerated: 7 days; Frozen (-20o C) Stability: 60 days
Remarks
Draw 3-7 hours after morning dose or 2 hours after rapid-acting oral dose. Draw trough just before next dose.
Days Performed
Sunday – Saturday
Methodology
Particle Enhanced Turbidimetric Inhibition Immunoassay
Reference Interval
5 – 20 ug/mL
Toxic: ≥ 25 ug/mL
ug/mL is reported as mcg/mL in LIS and EPIC
CPT Codes
80198