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CytoTest Appoints Rainbow Scientific as the Exclusive Distributor for FISH Probe markets in North America


Rockville, Maryland, January 01, 2020 – CytoTest Inc., a leading biotechnology company providing high quality, innovative, and affordable molecular cytogenetic products and services, has signed an exclusive distribution agreement with distributor Rainbow Scientific, Inc.  Rainbow Scientific, Inc. is the exclusive North American distributor for CytoTest’s extensive range of Fluorescence In-Situ Hybridization (FISH) probes and ancillary reagents.


CytoTest is continuing to build its global sales and marketing strategic partners with a value-added reseller.  Currently, CytoTest has North-European, South-European, Chinese, Russian, Indian, and North American  distributors.  CytoTest provides global professional sales and services to many of the world’s leading hospitals and research institutes. 


Peter Mousseau, President of Rainbow Scientific, commented:  “CytoTest’s strengths as an innovative FISH probe manufacturer is an excellent match with Rainbow Scientific’s 23 years of commercial cytogenetic experience marketing, selling and supporting a wide range of laboratory products and services to both clinical and research labs.” 


Joseph Cheng, CEO/President of CytoTest, added,  “The mission of CytoTest is to transform human genomic discoveries into useful products, and to design, manufacture, genetic and clinical diagnostics reagents with the highest quality. Partnering with Rainbow Scientific will allow us to quickly reach our market penetration goals.” 


FISH is a powerful technique designed to detect the presence or absence, location, integrity and amount of genomic sequences in tissue samples and cells and is an important and widely used technique for the clinical diagnosis of chromosomal disorders.  


About CytoTest Inc.

CytoTest Inc. is a world's leading biotechnology company providing high quality, innovative and affordable molecular cytogenetics products and services. CytoTest’s US headquarters are located in suburban Washington, DC, in Maryland, close to the National Institutes of Health (NIH), one of the world's leading centers for biological research. CytoTest’s proximity to and interaction with NIH, along with spirited connections with other strategic partners in the academic, biotechnology and clinical communities enables CytoTest to stay at the forefront of diagnostic medicine and closely monitor trends and developments in molecular cytogenetics. It also allows CytoTest to take a uniquely proactive approach to the development and validation of tests in response to new and anticipated needs of research and clinical pathology.


About Rainbow Scientific, Inc.

Rainbow Scientific, Inc. (RSI) has distributed state-of-the-art products to laboratories across North America for more than 23 years.


Hundreds of private, commercial and academic labs working in the fields of molecular cytogenetics, clinical chemistry, pathology and hemostasis choose RSI for our quality products, personalized service, and superior support.


Superior products with proven performance

We partner with manufacturers who are leaders in their fields to make available state-of-the-art, thoroughly defined products with proven performance. Products that can make a difference in your research and your results.


Personalized service from real people

At RSI, there are no automated calling labyrinths. When you call us to place an order or ask a question, you’ll get a real, knowledgeable person on the other end of the phone.


Answers when you need them

We know our products and their applications, so you’ll get prompt answers to any technical questions. And when our expertise is not enough, we’ll get you to someone who can help, without delay.


Prompt shipping to keep your research moving
We get you the product you need quickly and efficiently. Most products are in stock and will typically ship the day after you order.



We look forward to working with you–personally.






Joseph Cheng, CEO/President

9430 Key West Avenue, Suite 210
Rockville, Maryland 20850 USA
Tel: 202-688-1188

Peter Mousseau, President

83 Maple Avenue
Windsor, Connecticut 06095 USA
Tel: 860-298-8382



CytoTest Inc.  |  1395 Piccard Drive, Suite 308, Rockville, MD 20850, USA
Tel:+1-202-505-0204  |  +1-202-617-0180  |  Fax: +1-240-238-6615    Email:

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