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Caffeine, Serum
MessageTesting performed by Quest Diagnostics, Chantilly, VA
Test Code
8754
CPT Codes
83520
Preferred Specimen
Plain, red-top tube(s) (no gel)
Minimum Volume
1 mL (minimum volume: 0.5 mL) of serum
Transport Temperature
Ambient
Specimen Stability
Room Temperature: 5 days
Refrigerated: 7 days
Refrigerated: 7 days
Methodology
Immunoassay (IA)
Setup Schedule
Monday through Saturday
Report Available
1-2 days
Reference Range
Therapeutic concentration: 8-20 mg/L
Performed By
CoxHealth
Performing Laboratory
Quest Diagnostics, Chantilly, VA