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Test Code CAFF Caffeine, Serum

Reporting Name

Caffeine, S

Useful For

Monitoring caffeine therapy in neonates

 

Assessing caffeine toxicity in neonates

Method Name

Enzyme Multiplied Immunoassay Technique (EMIT)

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum


Specimen 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.


Reject Due To

Gross hemolysis Reject

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time
Serum Frozen (preferred) 28 days
  Ambient  72 hours
  Refrigerated  72 hours

Reference Values

Therapeutic: 8.0-20.0 mcg/mL

Critical value: ≥30.0 mcg/mL

Day(s) Performed

Monday through Saturday

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.

CPT Code Information

80155

LOINC Code Information

Test ID Test Order Name Order LOINC Value
CAFF Caffeine, S In Process

 

Result ID Test Result Name Result LOINC Value
8754 Caffeine, S 3422-3

Secondary ID

8754

Report Available

Same day/1 to 2 days

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.