Growth Hormone, Two Specimens
Use
The Growth Hormone, Two Specimens test is used to evaluate growth hormone levels in the human body, which can assist in diagnosing growth hormone deficiencies or excesses. It involves a baseline sample collection followed by administration of a treatment or stimulus, after which a second sample is collected. The test is crucial for patients undergoing growth hormone stimulation or suppression evaluation, often used in pediatric and adult endocrinology assessments.
Special Instructions
It is imperative to consult the Endocrine Appendix of the LabCorp Directory of Services for guidance on multiple specimen collection, as this test requires sequential sampling at different time points following a treatment stimulus. Ensure that patients discontinue biotin supplementation at least 72 hours before sample collection to evade test interference.
Limitations
The test results may be influenced if the patient is consuming a high dose of biotin supplements. Therefore, it is advised to verify patient supplement intake before testing. Additional confirmatory tests may be required based on initial results, which could impact turnaround time.
Methodology
Other
Biomarkers
LOINC Codes
- 12253-1
- 46963-5
- 12253-1
- 46963-5
- 49892-3
Result Turnaround Time
4-6 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Collect two baseline serum samples at specified intervals after administration of treatment or stimulus, as outlined in the Endocrine Appendix.
Patient Preparation
Patients should stop biotin consumption 72 hours prior to sample collection.