What Types of Cancer Can the Galleri™ Test Help Detect?

icon-person

Dr. James D. Fontaine

icon-calendar

7/18/2026

man with provider

When it comes to cancer, finding it sooner often creates more opportunities for timely care and informed medical decisions. That is one reason the Galleri test in San Diego has generated so much interest. Rather than focusing on a single type of cancer, the innovative Galleri multi-cancer screening blood test is designed to identify cancer signals associated with dozens of cancers through one simple blood draw, including many that have no routine screening guidelines today. 

At Fontaine MD Aesthetics and Anti-Aging Medicine, Dr. James D. Fontaine offers this advanced cancer screening test as part of a proactive approach to wellness, helping individuals explore new possibilities for early cancer detection alongside recommended preventive screenings. 

What cancers are hardest to detect early? 

Many cancers develop quietly, producing few or no noticeable signs until they have progressed. This is especially true for cancers affecting the pancreas, ovaries, liver, esophagus, gallbladder, and several other organs that currently have limited routine screening options. 

By supporting screening for multiple cancers at once, this blood test evaluates cancer signals associated with more than 50 different cancers, creating another opportunity to identify concerns earlier. Rather than replacing traditional cancer screening in San Diego, it complements established screenings, such as mammograms and colonoscopies, while expanding the reach of preventive care. 

How does the Galleri cancer test work? 

The process begins with a simple blood draw that is analyzed using advanced laboratory technology. Scientists evaluate DNA fragments circulating naturally in the bloodstream for methylation patterns that may indicate the presence of cancer. When a cancer signal is found, the laboratory also predicts where it most likely originated, helping guide the next stage of evaluation. This technology represents another advancement in detecting cancer early through blood tests and supports multi-cancer early detection, even before physical symptoms develop in some individuals. 

Does the Galleri test detect all cancers? 

Although this screening is highly innovative, no single test can identify all types of cancer or detect every cancer at every stage. Ongoing research continues to demonstrate promising Galleri test accuracy for cancer screening, particularly for cancers that lack traditional screening methods. Even with encouraging results, follow-up diagnostic testing remains necessary whenever a cancer signal is identified. 

Dr. Fontaine recommends viewing this screening as an additional layer of preventive care that works alongside age-appropriate screenings rather than replacing them, providing another option for those interested in comprehensive wellness monitoring. 

Be proactive about your future health in San Diego 

Advances in screening continue to create new opportunities to identify health concerns before they become more serious. If you are interested in the benefits of Galleri multi-cancer screening, want to explore whether a blood test can detect cancer early, which is becoming a reality through new technology, or are looking for advanced cancer screening, Dr. James D. Fontaine and the team at Fontaine MD Aesthetics and Anti-Aging Medicine are here to help. Schedule your consultation today to learn whether the Galleri test in San Diego is the right addition to your long-term preventive health strategy

When I came to Dr. Fontaine several years ago, I was going into early menopause and experiencing so many symptoms. Hot flashes, fatigue, pain, brain fog, and depression that were being dismissed by my regular doctors. Dr. Fontaine was truly a godsend. He listened, took my concerns seriously, and helped me create a plan that worked for my body. Over time, we adjusted my medication, and I now feel 100% better. I’m so grateful for his care and support!

A.H. Google

Louise initially treated me with Botox at an MD clinic I had been using for years. I was so pleased with my results, when she moved to Fontaine MD I followed her even though it was much farther away. Recently, I decided to also get fillers and expressed to her my desire for a very natural and youthful look, and she nailed it! She is a licensed RN with an Art degree therefore she really understands the anatomy and symmetry of the face. She is welcoming, professional, never rushes and very skilled at injecting both Botox and fillers, I highly recommend Louise!I also highly recommend Fontaine MD, great Doctor, and staff in a lovely, serene setting. They were instrumental in aiding me in a 20+ lb weight loss (so easy) and I could not be more grateful. I feel and look so much better and have maintained my new weight. That is not easy for many 60-year-old females.

L.L. Google

Louise is absolutely wonderful to work with! I have seen her for both an IPL facial and Botox (my very first time!). She took the time to answer my questions, address my concerns, and put my mind at ease. I could sense that I was in the hands of someone who was going to take care of me. Louise cares about her clients and their desired outcomes. I have done IPL facials in the past with other providers and the procedures felt very harsh on my skin. With Louise, my skin was not red, bumpy, or painful after and my sunspots were treated effectively! I also trusted Louise with my first Botox experience. Louise made me feel both comfortable and excited about the natural but effective results I was hoping to have! I am thankful I found Louise and will be a returning client!

N.B. Yelp

Louise listened to my skin concerns, made recommendations and completed Botox and filler procedures that that made an amazing difference!

C.T. Google

Before seeing Dr. Fontaine, I had no idea I could feel better. I just assumed that as I got older, low energy, hormonal struggles, and general decline were just part of life—something I had to accept. Looking back, I realize how much I had normalized feeling exhausted, unmotivated, and off-balance. My energy had dipped, my sleep was inconsistent, and no matter what I did, things like weight gain and mood swings seemed unavoidable. I wasn’t in crisis—I just wasn’t thriving. Dr. Fontaine completely changed that. From the first appointment, he took the time to listen, evaluate my symptoms, and explain what was really happening in my body. Seeing my lab results was an eye-opener—I finally had real data that explained why I felt the way I did. Within a couple of months of starting treatment, I started feeling like myself again. My energy improved, my focus sharpened, and I finally started sleeping through the night. Over time, the changes were undeniable—I was stronger, my mood was steady, and I didn’t feel like I was constantly fighting against my own body. Dr. Fontaine has been with me every step of the way, adjusting my treatment as needed and making sure I feel my best. He’s thorough, knowledgeable, and truly invested in his patients' well-being. I never feel rushed in my appointments, and he always takes the time to answer my questions. I didn’t realize how much I was missing out on until I started feeling this good again. Now, I feel like I’ve regained the energy, confidence, and vitality I thought were long gone. I’m beyond grateful to Dr. Fontaine for helping me.

C.M. Google

114

Total Reviews

4.9

Average Rating

star-full star-full star-full star-full star-half
privacy We respect your privacy
* All information subject to change. Images may contain models. Individual results are not guaranteed and may vary.