Calcitonin (Thyrocalcitonin), Three Specimens
Use
The Calcitonin test is used to measure the levels of calcitonin, a hormone produced by the thyroid gland, in the blood. It is primarily utilized in the diagnosis and management of medullary thyroid carcinoma (MTC), a type of thyroid cancer. Elevated levels of calcitonin can be indicative of the presence of MTC. This test is performed in a series where multiple specimens are collected over a period, especially when stimulated testing is required to increase diagnostic accuracy. Stimulated tests are useful when baseline calcitonin levels are normal but suspicion of MTC remains high.
Special Instructions
This test involves multiple specimen collections, typically requiring an initial sample at baseline followed by administration of a stimulus such as a medication or glucola. Follow-up specimens are collected at specified intervals thereafter. It is crucial to consult with the clinician to confirm the necessity of this test series and the appropriate timing of specimen collections after the stimulus is administered.
Limitations
Calcitonin levels obtained using different assay methods or kits cannot be used interchangeably. The results should be considered in conjunction with other diagnostic methods and clinical findings. Further confirmatory testing may be required if necessary. Also, the test should not be performed if there is no clear indication for a series collection as the interpretation of results may be confounded.
Methodology
Immunoassay (ICMA)
Biomarkers
LOINC Codes
- 12506-2
- 33788-1
- 46963-5
- 58892-1
- 58892-1
- 33788-1
- 12506-2
Result Turnaround Time
2-3 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Collect initial tube (baseline) then administer treatment (pill, shot, or glucola) and collect follow-up tubes at specified intervals.