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Test Directory » Caffeine

Test Directory Caffeine

Caffeine

Order Code: CAFFE

Test Summary

Coffee, tea and other beverages may contain caffeine. Caffeine is a methylxanthine found in over the counter products and in prescription medications. Small premature infants with mild respiratory distress shortly after birth may be treated with theophylline or caffeine. In neonates, a significant amount of theophylline is converted to caffeine. Since the demethylation pathway of theophylline is relatively undeveloped, caffeine levels may be elevated. Caffeine clearance rates typically reach adult values at about 3-4 months of age.

Aliases

Specimen Collection

Special Instructions

Collect as a trough just prior to next dose

Preferred Specimen

1 mL serum collected in a red-top tube (no gel)

Minimum Volume

0.2 Ml

Instructions

N/A

Patient Preparation

N/A

Storage

N/A

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: Unacceptable

Limitations

N/A

Other Acceptable Specimens

N/A

Unacceptable Specimens

Serum separator tube (SST)

Order Code

CAFFE

EPIC (Premier) Code

LAB483

Includes

N/A

CPT Code

80155

Billing Code

671168

CPT Statement

Methodology

Immunoassay (IA)

FDA Status

FDA Approved

Physician Attestation of Informed Consent

N/A

Testing Laboratory

Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly VA, 20153

Department

Reference Testing

Reference Range

8.0-20.0 mg/L

Setup Schedule / Expected Turnaround Time

Monday - Saturday; Report available: 1 - 2 days