Calcitonin
| Abbrev Code: | CALTN | ||
| Order Code: | LAB519 | Order Name: | Calcitonin |
| Synonyms: | Thyrocalcitonin | ||
| Methodology: | Chemiluminescent immunoassay | ||
| CPT Codes: | 82308 x1 | ||
| Turnaround Time: | Specimens are sent to reference laboratory Mon-Sat; results are reported in 1-2 days. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 4 mL |
| Minimum\Peds Volume: | 2.2 mL |
| Container: | Red or gold (gel) Alternate Containers: Green (lithium heparin, gel), Green (sodium heparin, no gel), Red (no gel) |
| Causes for Rejection: | Tissue or urine; EDTA plasma, grossly hemolyzed or lipemic specimens. |
Processing and Shipping
| Specimen Processing: | Separate serum or plasma from cells within 2 hours of collection. Aliquot 2 mL, 1 mL minimum into an ARUP transport tube. Store refrigerated. |
| Shipping Instructions: | Ship refrigerated. |
| Stability: | After separation from cells: 8 hours at room temperature; 1 week refrigerated; 3 months frozen. |
| Test Performed at or Referral Lab | Lab Sendouts (ARUP) |
| Referral Lab number: | 70006 |
Interpretive
| Reference Range: |
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| Limitations: | The Siemens Immulite 2000 method is used. Results obtained with different assay methods or kits cannot be used interchangeably. Calcitonin is useful in monitoring medullary thyroid carcinoma. The calcitonin assay value, regardless of level, should not be interpreted as absolute evidence of the presence or absence of malignant disease. | ||||
| Use: |
Diagnose and monitor medullary thyroid carcinoma (MTC). Secondary test to assist in diagnosing multiple endocrine neoplasa type II and familial MTC.
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