Caffeine
Label Mnemonic: CAFF
Epic code: LAB707
Downtime form: A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery
Commercial Mailout Laboratory
6240-8 RCP
356-8593
Specimen(s):
Serum
Specimen Instructions:
Separate serum from cells as soon as possible.
Collection Medium:
Red top tube 5 mL (Clot Activator)
Minimum:
Preferred Minimum: 0.5 mL serum
Absolute Minimum: 0.2 mL serum
Rejection Criteria:
Citrated Plasma, Serum separator tube (SST).
Delivery Instructions:
Submit specimen to laboratory as soon as possible after collection.
Turn Around Time:
1-5 days upon receipt at reference laboratory
Reference Range:
Therapeutic Range
0-28 days: 8-20 μg/mL
29 days and older: < 20 (not well established)

Toxic
0-28 days: > 20 μg/mL
29 days and older: > 20 μg/mL
Interpretive Data:
Toxic concentrations may cause tremor, cardiac abnormalities and seizures.
Comments:
Used in the treatment of apnea of prematurity.
Methodology:
Quantitative Enzyme Multiplied Immunoassay Technique
CPT Code:
80155