Clinics and Departments

Laboratory Services

Lab Dept:

Anatomic Pathology

Test Name:

CGH WITH SNP

General Information

Lab Order Codes:

SNPA

Synonyms:

CGH with Single Nucleotidase Polymorphism Array

CPT Codes:

81228 – Cytogenomic constitutional (genome-wide) microarray analysis; interrogation of genomic regions for copy number variants

88230 – Tissue culture for non-neoplastic disorders; lymphocyte

Test Includes:

An interpretive report of findings.

Logistics

Test Indications:

For detection of small duplications and deletions in patients with normal G-banded karyotypes. For characterization of abnormalities detected by G-banding.

Lab Testing Sections:

Anatomic Pathology – Sendouts

Referred to:

Fairview University of Medical Center

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily

Turnaround Time:

Results within 14-30 days

Special Instructions:

N/A

Specimen

Specimen Type:

Whole blood

Container:

Green (NaHeparin; no gel) top tube AND Purple (EDTA) top tube
Note: Both tubes are required.

Alternate: Yellow (ACD A) can be used instead of the EDTA.

Draw Volume:

Optimal volume: 20 mL blood [10 mL blood in Green (NaHeparin) AND
10 mL blood in Purple (EDTA)

Minimum volume:
10 mL blood [5 mL blood in Green (NaHeparin) AND
5 mL blood in Purple (EDTA)

Processed Volume:

Same as Draw Volume

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Do Not Centrifuge. Blood specimen should remain in the original collection container. Store and ship at ambient temperature. Avoid freezing.

Patient Preparation:

None

Sample Rejection:

Clotted or frozen specimen; mislabeled or unlabeled specimens; incorrect container type

Interpretive

Reference Range:

An interpretive report will be provided.

Critical Values:

N/A

Limitations:

Post-natal specimens only

Methodology:

Microarray

References:

Fairview University Medical Center Web Page



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