Calcitonin [30742]

Message
For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.


Test Code
CALCIT


Alias/See Also
30742


CPT Codes
82308

Preferred Specimen
1 mL frozen serum


Patient Preparation
Overnight fasting is preferred

Minimum Volume
0.5 mL


Instructions
Spin to separate serum and transfer to plastic screw-cap vial. Freeze immediately and submit to laboratory frozen.


Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
Refrigerated: 24 hours
Frozen: 28 days


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


Methodology
Immunoassay (IA)

Setup Schedule
Set up: Mon-Sat; Report available: 1 day


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
14225 Newbrook Drive
Chantilly, VA 20153


Last Updated: November 24, 2021


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.