Calcitonin : 30742

Test Code

CALTOQ or 30742

CPT Codes
82308

Instructions

Overnight fasting is preferred.

Serum separator tube or plain red.

Transport Container

Centrifuge the serum separator tube or plain red and aliquot 1 mL serum (Min: 0.5 mL) into a standard transport tube and freeze immediately.

Transport Temperature

Frozen.

Specimen Stability

Ambient: Unacceptable; Refrigerated: Unacceptable; Frozen: 28 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Gross hemolysis,

Methodology
Immunoassay

Setup Schedule

Monday & Wednesday & Friday

Report Available

3-6 days (From receipt at performing laboratory)

Limitations

Basal concentrations of >100 pg/mL have been found to have 100% positive predictive value for medullary thyroid cancer. Lower concentrations may be observed in some patients with clinically apparent medullary thyroid cancer.

Reference Range

Effective 8/24/2020
< 1 month:    Not Established
1-5 months:   < or = 29 pg/mL
6-12 months: < or = 18 pg/mL
13 months -2 years: < or = 10 pg/mL
3-6 years: < or = 7 pg/mL
7-17 years: < or = 6 pg/mL
> or = 18 years Male: < or = 10 pg/mL
> or = 18 years Female: < or = 5 pg/mL

This test was performed using the Siemens (DPC) Chemiluminescent method. Values obtained with different assay methods cannot be used interchangeably. Calcitonin levels, regardless of value, should not be interpreted as absolute evidence of the presence or absence of the disease.

Clinical Significance

Calcitonin concentration is increased in patients with medullary thyroid carcinoma. Calcitonin concentrations may be used to monitor disease.

Performing Laboratory
Quest Diagnostics

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.