Chromosome Analysis, Rule Out Mosaicism
Ordering Recommendation
Giemsa Band
3-10 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Green (sodium heparin).  
Specimen Preparation
Do not freeze or expose to extreme temperatures. Transport 5 mL whole blood. (Min: 2 mL) Specimen and completed test request form, including clinical indication, must be received within 48 hours of collection.  
Storage/Transport Temperature
Room temperature.  
Unacceptable Conditions
Frozen specimens. Clotted specimens.  
This test must be ordered using Cytogenetic test request form #43097 or through your ARUP interface. Submit the Patient History for Cytogenetic (Chromosome) Studies with the electronic packing list (available at  
Ambient: 48 hours; Refrigerated: 48 hours; Frozen: Unacceptable  
Reference Interval
By report
Interpretive Data
Counseling and informed consent are recommended for genetic testing. Consent forms are available online at
These studies involve culturing of living cells; therefore, turnaround times given represent average times which are subject to multiple variables. After specimen receipt, results are generally available in an average of 12 days.

A processing fee will be charged if this procedure is canceled at the client's request, after the test has been set up, or if the specimen integrity is inadequate to allow culture growth.
CPT Code(s)
88230; 88263; 88291
Component Test Code*Component Chart Name
0097650Chromosome Analysis, Rule Out Mosaicism
2002207EER Chromosome Analysis, R/O Mosaicism
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at
Cross References
  • Karyotype
  • Mosaic Chromosome Study
  • Mosaic Down syndrome
  • mosaic study
  • mosaic Turner syndrome