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Caffeine, Urine [37266X]
Test CodeUCAFF (Quest 37266X)
Preferred Specimen
1 mL random urine submitted in a sterile, leak-proof urine container
Minimum Volume
0.2 mL
Transport Temperature
Room Temperature: 3 days, Refrigerated: 14 days, Frozen: 1 month
Specimen Stability
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Immunoassay (IA)
Setup Schedule
Set up: Mon-Sat; Report available: 1-2 days
Reference Range
See Laboratory Report
Clinical Significance
Caffeine is a central nervous system stimulant. Its medical uses include restoring mental alertness, as an enhancement to the medical effectiveness of certain medications, and as part of treatment for breathing problems in premature infants. An overdose of caffeine can result in a state termed caffeine intoxication or caffeine poisoning. The analysis of urine specimens for the presence of caffeine, and/or its relative quantitative value, can assist clinicians in assessing potential caffeine poisonings or compliance with dependence treatment regimens, especially when serum collection may be precluded or difficult.
Performing Laboratory
Quest Diagnostics Nichols Institute |
14225 Newbrook Drive |
Chantilly, VA 20153 |