Familial Hypocalciuric Hypercalcemia (CASR) Evaluation

Test Code
900611

CPT Codes
81405

Preferred Specimen
8 mL whole blood collected in an EDTA (lavender-top) tube, or
Pediatric volume: 2 mL

Minimum Volume
6 mL
Pediatric: 1 mL

Instructions
Informed consent is required. Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
Hemolysis may compromise DNA recovery and integrity after 48 hours.

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 10 days
Refrigerated: 10 days
Frozen: Unacceptable

Methodology
Polymerase Chain Reaction • DNA Sequencing

Setup Schedule
Set up: Varies; Report available: 14-28 days

Reference Range
No mutation detected

Clinical Significance
Test detects mutations (including point mutations, deletions, insertions, and rearrangements) in the coding sequences of CASR. Disease(s) tested for: Familial Hypocalciuric Hypercalcemia.

Performing Laboratory
Athena Diagnostics, Inc.
200 Forest Street, 2nd Floor
Marlborough, MA 01752



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.