Test Method
Cytogenetics
CPT Codes
81229
Test Description
The test detects chromosome aberrations and provides a comprehensive analysis of the balanced and unbalanced structural and numerical abnormalities. It is often used for specimens that fail to grow in culture, or to diagnose heritable genetic abnormalities.
Specimen Requirements
- Bone marrow aspirate: 2-3 mL in sodium heparin (green top)
- Peripheral blood: 5 mL in sodium heparin (green top)
- Fresh Tissue: Multiple 2-3 mm pieces of tissue in RPMI transport media (optimum RPMI to tissue ratio is 15:1; (multiple vials are acceptable)
- Body Fluids: Mix 1:1 in RPMI transport media
- Formalin-Fixed Paraffin-Embedded Tissue: Minimum 0.2 x 0.2 x 0.2 cm tissue, non-decalcified tissue only
Storage & Transport
Ship specimen the same day whenever possible, with refrigerated (not frozen) cold pack.
Label all tubes with at least two unique patient identifiers. Identifiers include name, DOB, specimen ID# or medical record#.
Label all tubes with at least two unique patient identifiers. Identifiers include name, DOB, specimen ID# or medical record#.
Turnaround time
6-8 Days (blood and lymph) 14 Days (tissue)
Level of Service
Global