Theophylline

Alphabetical Test listing

Theophylline-248

Test name:

Theophylline

Test number:

248

Excellian order number:

80198.0

Abbreviation:

THE

Alternate names:

Aminophylline
Slo-bid®
Theodur®
Elexophyllin

Useful for:

Therapeutic Drug Management

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

1.0 mL

Minimum volume:

0.3 mL

Collection instructions:

Trough levels are most reproducible; occasionally peaks at 1 1/2 hours post dose.

Processing instructions:

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

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:

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

Alternate processing instructions:

Spin
Transfer plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as the appropriate plasma type, within two (2) hours of sample collection

Transport and stability:

Refrigerated (preferred) - 7 days

Ambient - 3 days

Frozen (OK)

Performing lab:

MedTox Laboratories (117): R-MX

Days set up:

Daily

TAT:

1 - 2 days

Method:

Immunoassay (IA)

Reference ranges:

Therapeutic: 10.0 - 20.0 µg/mL

Results that require action (critical):

Two months and older: > 25.0 µg/mL

CPT codes:

80198

Date created:

11/30/2001

Revised date:

04/13/2022

Review date:

04/11/2022