Calcitonin

Test Code

CLCT

Quest Code

30742

CPT Codes
82308

Preferred Specimen

1 mL serum from SST

Patient Preparation
Overnight fasting is preferred

Minimum Volume

0.5 mL

Instructions

Spin to separate serum and transfer to transport tube vial. Freeze immediately and submit to laboratory frozen.

Transport Container

Transport tube

Transport Temperature

Frozen

Specimen Stability

Room temperature: Unacceptable
Refrigerated: Unacceptable
Frozen: 28 days

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

Gross hemolysis • Received thawed • Received room temperature • Received refrigerated

Methodology
Immunoassay (IA)

Setup Schedule

Mon-sat

Report Available

2 days

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

See Laboratory Report

Clinical Significance

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

Performing Laboratory

Quest Diagnostics Nichols Institute-Chantilly VA

14225 Newbrook Drive

Chantilly, VA 20151-2228

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.