Days Set Up
Daily
Analytic Time

4 hours

MiChart Code
Caffeine Level
Soft Order Code
CAF

Test Updated:

Synonyms

CAF
CAFFEINE

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Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology

LCMS

Test Usage

Monitor therapeutic drug level.

Reference Range

5 - 20 mcg/mL; Toxic > 25 mcg/mL

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect specimen in a red, green (heparin), or lavender (EDTA) top tube; do not use SST tube. Centrifuge, aliquot serum or plasma into a plastic vial and refrigerate.

Red Top Tube
Normal Volume
0.5 mL serum or plasma
Minimum Volume
0.3 mL serum or plasma

Billing Information

CPT Code
80155
Pro Fee Code
 
Insurance Auth Info
 
LOINC
3422-3

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.