Caffeine

Alphabetical Test listing

Caffeine-167

Test name:

Caffeine

Test number:

167

Excellian order number:

83520.5

Abbreviation:

CAF

Useful for:

Therapeutic drug management

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

1.0 mL

Minimum volume:

0.2 mL

Processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Transfer serum to a Serum/plasma transfer vial/tube (MedTox), labelled as serum

Transport container:

Serum/plasma transfer vial/tube (MedTox)

Alternate specimen type:

Heparin plasma

Alternate collection container:

Dk green heparin (Li or Na), no gel

Alternate collection instructions:

Immediately following collection, mix sample thoroughly by gently inverting 8 - 10 times to prevent clotting

Alternate processing instructions:

Spin within two (2) hours of sample collection
Transfer plasma to a Serum/plasma transfer vial/tube (MedTox), labelled as the appropriate plasma type

Transport and stability:

Refrigerated (preferred)

Ambient - 3 days

Frozen (OK)

Reason for rejection:

Gel-barrier tubes are not recommended

Performing lab:

MedTox Laboratories (18): R-MX

Days set up:

Daily

TAT:

1 - 2 days

Method:

Immunoassay (IA)

Reference ranges:

8.0 - 20.0 µg/mL

Results that require action (critical):

>50.0 µg/mL

CPT codes:

80155

Date created:

11/30/2001

Revised date:

01/04/2024

Review date:

01/04/2024