Skip to main content
Quest Diagnostics Home

Chromosome Analysis, Sister Chromatid Exchange

Test code(s) 14599

No, this assay is meant to diagnose Bloom syndrome in patients suspected of having the disorder. This assay will not detect carriers. Bloom syndrome carrier studies for individuals of Ashkenazi Jewish origin are available, using Quest Diagnostics test code 90872 (or 90873 for New York State), Bloom Syndrome DNA Mutation Analysis.

No. This test was designed specifically to detect the increase in sister chromatid exchange levels that is specific to Bloom syndrome. Please call 866-GENE-INFO for information on additional testing options.

The sister chromatid exchange assay is highly specific to Bloom syndrome. As there are rare cases of mosaicism, additional cells can be examined at your request. Molecular genetic testing may also be appropriate. Please call 866-GENE-INFO to discuss and coordinate additional studies.

This FAQ is provided for informational purposes only and is not intended as medical advice. A clinician’s test selection and interpretation, diagnosis, and patient management decisions should be based on his/her education, clinical expertise, and assessment of the patient.

Document FAQS.71 Revision: 0
 

Our company

Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA certified laboratories that provide HIPAA covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA covered services. 

 

Quest, Quest Diagnostics, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2023 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only.