Special Instructions

This test requires a series of four blood samples to be drawn at different times. The initial sample is collected as a baseline, followed by treatment with a drug or other form of stimulation. Subsequent samples are then collected at prescribed intervals after the treatment. Prior to test initiation, clinicians must determine the necessity for this series and the specific treatment protocol. Refer to the Endocrine Appendix of the Labcorp Directory of Services for detailed instructions on multiple specimen testing.

Limitations

There are potential limitations with the timing and conditions surrounding the test, as hormonal levels may be influenced by external factors such as stress, medication, or acute illness. The test requires proper coordination of specimen collection times and treatment administration to ensure accurate results. Inaccuracies may occur if the timing between collections is not adhered to or if patient compliance is insufficient. Variability in lab methodologies and external factors may also impact the reliability of the test results.

Biomarkers

LOINC Codes

Result Turnaround Time

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