TRH Stimulation for Thyroid Function
- Test Code
- L590
- Results:
- 1-2 days.
- Container
- All samples should be in red top or serum separator tube.
- Specimen
- 0.5 mL PRE serum, 0.5 mL 2-hour POST serum, 4-hour POST serum (label accordingly).
- Test Description
- T3 (Baseline), T4 (Baseline), T3 (2-hour POST TRH), T4 (4-hour POST TRH)
Sample Handling:
• Draw baseline serum sample.
• Administer 1 mg of TRH IV.
• Draw 2-hour POST serum sample.
• Draw 4-hour POST serum sample.