RGCC Testing & Precision Medicine Therapies in Toronto

RGCC provides specialized testing and therapies for cancer and chronic viral conditions. Dr. Biljana Kostovic is a leading Canadian physician utilizing advanced diagnostics from RGCC to support patients with these complex illnesses. Her clinical approach integrates nutrigenomic insights with precision laboratory testing to guide individualized treatment strategies.
Book a Discovery Call

What is RGCC?

Most cancer testing tells you what you have. RGCC testing helps answer the harder question — what will actually work against it. For chronic viral and Lyme conditions, the same blood-based technology guides a personalized therapy targeted to your specific infection.

For cancer patients, RGCC builds an individual profile that can flag early cellular changes, monitor how a treatment is working, and — with the Onconomics panels — show which conventional drugs and natural agents your tumour actually responds to. For chronic viral and Lyme conditions, the same blood-based technology identifies the specific pathogen so therapy can be personalized and targeted to it.

Is RGCC Right For You?

1. Oncology Patients

For patients with a cancer diagnosis — or those who want proactive early detection. RGCC analyzes your circulating tumor cells to map drug sensitivities, monitor treatment response, and guide personalized therapy selection.

Active cancer diagnosis; Cancer monitoring; Early detection screening; Recurrence prevention.

2. Chronic Viral Infection Patients

For patients dealing with persistent viral conditions that conventional treatments haven't resolved. RGCC's PrimeSpot testing identifies your specific viral signatures, and Q-REstrain gene-silencing therapy targets them at the genetic level.

Epstein-Barr (EBV); Lyme disease; Chronic viral reactivation; Co-infections.

Book a Discovery Call

RGCC Cancer Tests

Learn More
Onconomics Plus
A comprehensive liquid biopsy panel analyzing circulating tumor cells, gene expression, drug sensitivity to 50+ chemotherapies, and response to 50+ natural substances—offering a full personalized cancer treatment roadmap.
Learn More
Circulating Tumor Cell (CTC) Testing
Measures the number of tumor cells circulating in your bloodstream. Offers real-time insight into tumor burden, treatment effectiveness, and risk of progression or metastasis.
Learn More
Oncotrace Test
A broad baseline test capturing CTC count, phenotype markers, and stemness markers. Provides an initial snapshot of cancer status and helps identify both primary and secondary tumors.
Learn More
Oncocount Test
Measures the presence and concentration of circulating tumor cells. An essential interim tool for checking treatment response and detecting recurrence during ongoing monitoring.
Learn More
Early Detection With Onco-D-clare
A proactive screening test for individuals without symptoms. Uses advanced gene expression analysis and machine learning to identify early cancer signals with ~93% accuracy.

Why Choose the Upper Room Clinic?

Our lead physician, Dr. Biljana Kostovic, is a leader in RGCC diagnostics and therapies in Canada. She has been recognized by RGCC international as a pioneer in the field, pushing the boundaries of precision medicine. With specialties in Emergency Medicine and Pain Medicine, she brings a rare combination of rapid-response and long-term care to her practice. A former department head in Charlotte County, New Brunswick, Dr. Kostovic brings institutional leadership and clinical excellence in equal measure.  

At Upper Room Clinic, we offer advanced RGCC testing to help patients better understand their cancer at a genetic and cellular level. This cutting-edge blood test analyzes circulating tumor cells, immune response, and genetic expression to reveal how your cancer behaves and which treatments may be most effective for your unique case.

Through our integrative approach in Toronto and Oakville, RGCC testing becomes the foundation for a personalized care plan—supporting early detection, treatment optimization, and ongoing monitoring so you can make informed decisions about your health with confidence.

Get RGCC Test Now

Not sure what service is right for you?

Call us to find the right consultation—where you start depends on your concerns, and our doctor guides the rest. Our medical assistants can answer questions about therapies, but cannot  comment on your specific treatment needs.
Book a Discovery Call

Contact Us

Locations
Upper Room Clinic – Oakville
Tel: 647-910-5359
Fax: 289-644-0255
oakville@upperroomclinic.com

Upper Room Clinic – Davisville
Tel: 647-521-8024
Fax: 647-348-8024
hello@upperroomclinic.com

Tuesday to Saturday
11am-6pm

Quick Links

Wellness LibraryTherapieslocationsPRICINGABOUT US

Stay connected

Sign up to receive updates, offers, and the latest news directly to your inbox.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.

Copyright © 2026 Upper Room Clinic | Privacy Policy | Terms of Use