Home
HelpTest ID BLOD0403 Caffeine, Serum
Useful For
Monitoring caffeine therapy in neonates
Assessing caffeine toxicity in neonates
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL
Collection Instructions:
1. Serum gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and the serum aliquoted into a plastic vial within 2 hours of collection.
Specimen Minimum Volume
0.25 mL
Reject Due To
| Gross hemolysis | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum | Frozen (preferred) | 28 days | |
| Ambient | 72 hours | ||
| Refrigerated | 72 hours |
Day(s) Performed
Monday through Saturday
Report Available
Same day/1 to 2 daysMethod Name
Enzyme Multiplied Immunoassay Technique (EMIT)
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
80155
Secondary ID
8754Reporting Name
Caffeine, SReference Values
Therapeutic: 8.0-20.0 mcg/mL
Critical value: ≥30.0 mcg/mL
Test Classification
This test has been modified from the manufacturer's instructions. Its performance characteristics were determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.
SANFORD LABORATORY INTERFACE BUILD INFORMATION
| Result Code | Result Code Description |
|---|---|
| 13044 | Caffeine, S |