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HelpOncology SNP Microarray
Clinical System Name
Chromosomal SNP Microarray
Description
This test is appropriate for individuals with newly diagnosed acute leukemia
Sample Requirements
Specimen: Whole blood, or bone marrow
Container(s): sodium heparin or Lavender/EDTA
Preferred Vol: 2-3 mL*
Minimum Vol: 0.5-2 mL*
*volume requirement depends on WBC count and can be variable.
Processing Instructions
Reject due to: do not reject, contact Cytogenetics 987-3961
Spin: N
Aliquot: N
Temp: RT
Storage location: Days: Transport specimen, requistion, and labels to 4th floor Cytogenetics (station #181).
Eves/Nights: Store specimen, copy of requisition, and labels in the Cytogenetics box in CPA.
Off-site collection: Ship overnight at RT. Samples received Mon-Fri: 8:00 am - 5:00 pm.
Stability
| Temperature | Time |
|---|---|
| Room temp | 5 days |
| Refrigerated | 5 days |
| Frozen | No |
Performing Laboratory
Seattle Children's Hospital
Department
Department: Cytogenetics Laboratory
Phone number: 206-987-3961
Lab Client Services: 206-987-2617, labclientservices@seattlechildrens.org
Lab Genetic Counselors: LabGC@seattlechildrens.org
Synonyms
Bone Marrow Array
CMA Array
Microarray
Leukemia
Oncology SNP Array
Oncology Array
Single Nucleotide Polymorphism
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Daily | up to 21 days |
Methodology
Method:
The Affymetrix Cytoscan DX array contains 1.9 million non-polymorphic markers and 750,000 SNP markers which gives the following coverage:
- Covering >36,000 RefSeq genes with one/880 bases
- Backbone (non-gene) coverage of one marker/1,700 bases
- X-chromosome genes (one marker/486 bases)
- Covering 12,000 OMIM genes (~one marker/659 bases)
CPT Codes
81229