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HelpTest Code CAFFM Caffeine, Serum
Additional Codes
| Mayo | CAFF |
| Epic ID | LAB706 |
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 Serum
Collection Instructions:
1. Within 2 hours of collection, centrifuge the specimen.
2. For serum gel tubes, serum may sit on the gel or be aliquoted into a plastic vial.
3. For red top tubes, aliquot serum into a plastic vial immediately after centrifugation.
Specimen Minimum Volume
Serum: 0.25 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 28 days |
| Ambient | 72 hours | |
| Refrigerated | 72 hours |
UPH Waterloo Region Lab Test Catalog
Note:
Transport frozen.
Reject Due To
| Gross hemolysis | Reject |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Method Name
Enzyme Multiplied Immunoassay Technique (EMIT)
Useful For
Monitoring caffeine therapy in neonates
Assessing caffeine toxicity in neonates
Day(s) Performed
Monday through Saturday
Report Available
Same day/1 to 2 daysReference Values
Therapeutic: 8.0-20.0 mcg/mL
Critical value: ≥30.0 mcg/mL
CPT Code Information
80155