Chromosome Analysis, Rule Out Mosaicism
Ordering Recommendation

Increased number of cells counted/analyzed to rule out low-level mosaicism.

Giemsa Band
3-10 days
New York DOH Approval Status
This test is New York DOH approved.
Time SensitiveTime Sensitive
Cytogenetic Test Request Form Recommended (ARUP form #43097)Cytogenetic Test Request Form Recommended (ARUP form #43097)
ARUP Consult®
Disease Topics
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)  
Storage/Transport Temperature
Room temperature.  
Unacceptable Conditions
Frozen specimens. Clotted specimens.  
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.

Specimen and completed test request form, including clinical indication, must be received within 48 hours of collection.

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
CPT Code(s)
88230; 88263; 88291
Component Test Code*Component Chart NameLOINC
0097650Chromosome Analysis, Rule Out Mosaicism29770-5
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, please click the sidebar link to access the Interface Map.
  • Karyotype
  • Mosaic Chromosome Study
  • Mosaic Down syndrome
  • mosaic study
  • mosaic Turner syndrome