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HelpTest Code LAB3519 Trimethoprim + Sulfamethoxazole Levels (Septra)
Clinical System Name
Trimethoprim + Sulfamethoxazole Levels (Septra)
Synonyms
Aliases: Antimicrobial Assay, Trimethoprim; Bactrim (Sulfamethoxazole and Trimethoprim); Gantanol (Sulfamethoxazole); Septra (Sulfamethoxazole and Trimethoprim); SEPTRA (Sulfamethoxazole and Trimethoprim); Sulfamethoxazole; Sulfamethoxazole and Trimethoprim (Bactrim, SEPTRA); Trimethoprim, Antimicrobial Assay Bactrim; Trimethoprim and Sulfamethoxazole (Bactrim, SEPTRA)
Sample Requirements
Collection Container/Tube: Red top (gel tubes/SST are not acceptable)
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL
Collection Instructions:
1. Serum for a peak level should be collected 60 minutes after dose.
2. Centrifuge within 2 hours of collection.
Processing Instructions
Reject due to:
Spin: Y
Aliquot: Y
Temp: 2 - 8 C
Storage location: CPA1 refrigerator, Send Outs rack
Note: Separate from cells within two hours of collection. Transfer 1.0 mL serum (Min: 0.2 mL) to a plastic aliquot tube.
Stability
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum Red | Refrigerated (preferred) | 28 days | |
| Ambient | 28 days | ||
| Frozen | 28 days |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Monday, Thursday; 1 p.m. |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Department
Department: Send Outs
Phone Number: (206) 987-2563
CPT Codes
80299 (x2)
Methodology
Method: Samples are extracted with analyte detection by mass spectrometry.
Analytical Volume: 0.4 mL
Limitations:
Send Out Instructions
| Reference Test Name: |
Trimethoprim, Serum & Sulfamethoxazole, Serum |
| Reference Lab Test Code: | TMP & SFZ |
| Instructions: | Send out Monday through Friday with the Mayo courier. |