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Nifedipine, Serum/Plasma
Test Code6225
CPT Codes
80299
Preferred Specimen
1 mL serum collected in a red-top tube (no gel)
Minimum Volume
0.5 mL
Other Acceptable Specimens
Plasma collected in an EDTA (lavender-top), EDTA (pink-top), sodium heparin (green-top), 3.2% sodium citrate (light blue-top) or ACD solution B (yellow-top) tube
Instructions
Promptly centrifuge and separate serum or plasma into a plastic screw-cap vial using approved guidelines.
Wrap tube in aluminum foil to protect from light. Testing will be cancelled if sample is not light protected. The use of serum separator tubes is not recommended.
Wrap tube in aluminum foil to protect from light. Testing will be cancelled if sample is not light protected. The use of serum separator tubes is not recommended.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: Not Establsihed
Refrigerated: 30 days
Frozen: 90 days
Refrigerated: 30 days
Frozen: 90 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Not protected from light • Polymer gel separation tube (PST) • Serum separator tube (SST)
Methodology
High Performance Liquid Chromatography (HPLC)
Setup Schedule
Sets up 1 day a week.
Clinical Significance
Therapeutic drug monitoring.
