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Sulfamethoxazole, serum-994

Test info

Test name:

Sulfamethoxazole, serum

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

Bactrim
Gantanol
SEPTRA (Sulfamethoxazole and Trimethoprim)
SEPTRA

Useful for:

Monitoring therapy to ensure drug absorption, clearance, or compliance.

Specimen

Specimen type:

Serum

Collection container:

Red serum vial/tube, 5 mL

Volume:

1.0 mL

Minimum volume:

0.5 mL

Collection instructions:

Serum for a peak level should be drawn 60 minutes after dose

Processing instructions:

Allow sample to clot
Spin within two (2) hours of sample collection
Transfer serum to a Screw cap transfer vial/tube (Mayo T914), labelled as serum

Transport container:

Screw cap transfer vial/tube (Mayo T914)

Transport and stability:

Refrigerated (preferred) - 28 days

Ambient - 28 days

Frozen - 28 days

Reason for rejection:

Gel-barrier tubes

Performance

Performing lab:

Mayo Clinic Laboratories (SFZ): R- NX

Days set up:

Mo, Th: 1 pm

TAT:

2 - 5 days

Method:

Liquid-Chromatography Tandem Mass Spectrometry (LC-MS/MS)

Clinical and Interpretive info

Reference ranges:

>50 µg/mL (Peak)

Billing

CPT codes:

80299

Tracking

Date created:

08/26/2019

Revised date:

07/17/2024

Review date:

01/04/2024