Cancer

Insights tests  

Advanced Testing for People Living with Cancer

Modern cancer care is rapidly evolving. Today, functional testing offers new insights into how cancer behaves at a cellular and genetic level, helping you and your care team make more personalized decisions.

RGCC International offers advanced testing for cancer patients to better refine treatment.

For information on other tests which me be useful, see tests listed under Health Benchmarking & Complex Conditions  →

R.G.C.C. International Cancer Tests

RGCC advanced Cancer Testing - Functional test available through Sydney Naturopath Catrina Bleicher

RGCC International (Greece) provides world-leading tests capable of identifying potential early signs of cancer, monitoring diagnosed cancers, and offering personalized guidance on the most effective combinations of cancer treatments and therapies, including complementary approaches.

What they Measure

Their Liquid Biopsy Tests provide a comprehensive evaluation of different types of biomarkers in the blood, including circulating tumour DNA, cell-free RNA, proteins and circulating tumour cells. Liquid biopsies can provide information about the presence of cancer, genetic changes in the body, the effectiveness of treatment and the progression of the disease.

Some key RGCC tests include:

  • Onconomics Plus: Assesses sensitivity of detected tumour cells to multiple chemotherapy agents, targeted therapies, and natural compounds—helping to personalize treatment choices.

  • Onconomics Extracts: Focuses on how tumour cells respond to specific plant-based and natural agents, aiding integrative care planning.

  • Oncotrail RGCC: Monitors CTC numbers and types in confirmed cancer (e.g. breast, colon, lung, melanoma, prostate, sarcoma), offering guidance on relapse risk and ongoing treatment effectiveness.

Who Benefits?

Functional cancer tests may help people who:

  • Are currently receiving cancer treatments and wish to personalize their supportive care plan.

  • Have completed treatment and want to monitor for recurrence or ongoing risk.

  • Have a strong family history or genetic predisposition.

  • Are seeking evidence-based integrative strategies that complement medical care and provide reassurance.

Why RGCC is Useful:

RGCC tests offer a validated scientific window into tumour biology. Sensitivity and specificity rates for circulating tumour cell (CTC) assays range from 86%–87% and 83%–84% respectively, subject to cancer type and clinical context. These results don’t replace conventional diagnosis or imaging, but can provide valuable additional insights for treatment personalization and emotional peace of mind.

All results are thoroughly reviewed—combining conventional medical perspectives with holistic strategies for strength, resilience, and wellbeing.

Sample: Blood draw, processed via NutriPath approved pathology lab in Australia, and sent to RGCC International.

Turnaround Time: 4–5 weeks

Lab Accreditation: RGCC labs meet IAS accreditation standards for technical and ethical reliability.

For more information on the RGCC International cancer tests, visit their site here.

Cancer testing for personalised integrative cancer care with Sydney Naturopath Catrina Bleicher

Looking for deeper insight into your Cancer diagnosis? Book a Consultation →

Emotional Support, Honest Expectations

Functional tests can help some people feel more hopeful, informed, or proactive—but no test can guarantee specific outcomes. We are committed to clear communication, ethical practice, and walking beside you through every step, understanding that compassion and honesty are as important as clinical expertise.

Complementary medicine for cancer patients with Essencia Wellbeing in Sydney

Cancer FAQs

  • Yes, when done with care and appropriate training, naturopathic support can be a safe and valuable part of your cancer journey. I offer evidence-informed, integrative care that works alongside your oncology treatment, never in place of it.

    My approach focuses on:
    – Supporting your strength, energy and immune system
    – Managing side effects like nausea, fatigue or digestive issues
    – Supporting emotional wellbeing and stress resilience
    – Helping you recover and rebuild after treatment

    I always consider your diagnosis, current treatments, medications and medical advice. My role is to complement, not replace your medical care, and I’m happy to liaise with your healthcare team to ensure everything works together safely. All recommendations are tailored specifically to your needs and based on the best available evidence.


  • No. These tests are used as adjuncts to conventional diagnosis and monitoring, not as substitutes. All cancer decisions should be made with an oncology specialist.

  • Not all oncologists use or interpret RGCC or functional testing. Results are best shared as part of a collaborative care process.

  • Suitability is determined through initial assessment according to individual medical history, treatment timing, and goals.

Ready to get the cancer care you deserve?

Book your free 10-minute discovery call to discuss how we might work together, or dive in fully with an initial consutation.

For more information about fees and packages, visit our Fees & Bookings page

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