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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: CGA- Genetic Dx

Test Code(s): SLH801 / HCSLH801

CPT Code(s): 88230, 88262, 88289

Clinical Significance: Determination of patient karyotype for: syndrome identification, atypical development, chromosome breakage syndrome, atypical sexual development, infertility, history of pregnancy loss, family studies, etc.

Testing Site: Testing will be sent to an approved reference laboratory.

Turnaround Time: Stat: 2 - 3 days.
Routine: Up to 14 days

Specimen Requirements

Specimen: Blood

Collection Instructions: This blood must be received and processed by WSLH within 48 hours of collection.  Blood must be received by UWHC Core Laboratory Monday-Friday.

Collection Container: Preferred: Green top (with sodium heparin anticoagulant)

Collection Volume: Preferred: 4 mL
Pediatrics: 1 - 2 mL

Sample Analyzed: Whole Blood

Volume Required: Preferred: 4 mL
Pediatrics: 1 - 2 mL

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220) at room temperature (if temperature exceeds 85, transport with coolant pack).

Unacceptable Criteria: Whole blood that is clotted or frozen.  Blood collected in EDTA, sodium-citrate or anticoagulants other than sodium heparin. Plasma and serum are not acceptable.

Stability: Ambient: 48 hours
Refrigerated: 48 hours
Frozen: Not acceptable


Expected Results:

46,XX or 46,XY; Apparently normal karyotype, photograph of a representative karyotype included with report.

Additional Information:

Cell culture, analysis of 20 cells with G-banding, two karyotypes; additional cells, karyotypes and/or other banding procedures are performed if indicated by initial results. If additional banding is indicated, will perform extended banding, Q-banding, C-banding, N-banding; if initial results suggest mosaicism, a total of 50 cells will be evaluated at no additional charge. If DNA Probes are required, there will be a small additional charge.


Karyotype High Resolution Chromosome Analysis, cytogenetics

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