Chromosome Analysis, High Resolution

Test Code

CPT Codes
88230, 88262, 88289

Physician Attestation of Informed Consent
This germline genetic test requires physician attestation that patient consent has been received if ordering medical facility is located in AK, DE, FL, GA, IA, MA, MN, NV, NJ, NY, OR, SD or VT or test is performed in MA.

Preferred Specimen
10 mL whole blood collected in sodium heparin (green-top) tube
Infants: 2-3 mL whole blood in pediatric (3 mL) vacutainer

Minimum Volume
3 mL

Other Acceptable Specimens
Whole blood collected in: sodium heparin (royal blue-top), sodium heparin lead-free (tan-top) tube

Clinical history and reason for referral are required with test order.
Infants 2-3 mL in pediatric (3 mL) vacutainer. Ship at room temperature.
Other vacutainer tubes containing sodium heparin are acceptable.

Specimen viability decreases during transit. Send specimen to testing lab for viability determination. Do not freeze. Do not reject.

Preliminary results available for neonatal specimens three days after receipt.

Note: If cultures do not yield metaphases for analysis, test may be replaced by: Chromosome Analysis, Blood, No Growth code, or Cytogenetics Communication (if a communication is required).

Transport Temperature
Room temperature

Specimen Stability
Room temperature: See instructions
Refrigerated: See instructions
Frozen: See instructions

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

Culture • Karyotype • Microscopy

Setup Schedule
Set up: Daily; Report available: 10 days

Reference Range
See Laboratory Report

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

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.