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Duloxetine, serum or plasma-994

Test info

Test name:

Duloxetine, serum or plasma

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Cymbalta

Useful for:

Therapeutic drug management

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube - 5 mL

Volume:

3.0 mL

Minimum volume:

0.5 mL

Processing instructions:

Allow sample to clot
Spin
Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within two (2) hours of sample collection

Transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

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
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 - 4 days

Ambient - 4 days

Frozen - 70 days

Reason for rejection:

Gel-barrier tubes

Performance

Performing lab:

MedTox Laboratories Inc (775) via LabCorp (284285): R-NX

TAT:

10 days

Method:

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Clinical and Interpretive info

Reference ranges:

Expected steady state trough concentration in patients receiving recommended daily dosages: up to 50 ng/mL

Billing

CPT codes:

80299

Subject to medical necessity (Y/N):

LOINC code:

Result 46227-5

Tracking

Date created:

05/30/2019

Revised date:

04/12/2022

Review date:

04/11/2022