Colon cancer screening saves lives, yet many people delay or avoid testing due to concerns about colonoscopy procedures. At PromiseCare Medical Group, our physicians serving Riverside County communities understand these concerns. That’s why we’re committed to educating our patients about Fecal Occult Blood Tests (FOBT) – a simple, private at-home screening option that can detect colorectal cancer early when it’s most treatable.
What Is FOBT Testing?
A Fecal Occult Blood Test is a screening method that checks for hidden blood in your stool that you cannot see with the naked eye. “Occult” means hidden, and this test uses chemical reactions or antibodies to detect tiny traces of blood that could indicate bleeding somewhere in your digestive tract.
PromiseCare Medical Group physicians, including Dr. Michael P. Curley and our network of board-certified family medicine and internal medicine specialists across Hemet, Murrieta, Temecula, and throughout Riverside County, regularly recommend FOBT testing as part of comprehensive preventive care strategies for our Medicare Advantage and HMO patients.
Why Hidden Blood Matters
Blood vessels on the surface of colorectal polyps or cancers are often fragile and easily damaged as stool passes through the colon. While this bleeding is usually too small to see, it leaves microscopic traces that FOBT can detect. Finding this hidden blood early allows your PromiseCare physician to recommend follow-up testing before a condition becomes serious.
Types of FOBT Tests Available
Guaiac-Based Fecal Occult Blood Test (gFOBT)
The traditional gFOBT uses a chemical called guaiac to detect blood. When you apply stool samples to special cards and lab technicians add hydrogen peroxide, a color change indicates blood presence. This test requires dietary restrictions before testing, as certain foods like red meat and raw vegetables can cause false-positive results.
Fecal Immunochemical Test (FIT or iFOBT)
The FIT test is now more commonly recommended by PromiseCare physicians because it offers several advantages:
- No dietary restrictions needed
- More specific to lower intestinal bleeding
- Higher sensitivity for detecting colorectal issues
- Uses antibodies to detect human hemoglobin specifically
- Easier sample collection process
FIT-DNA Tests
Advanced options like Cologuard combine FIT testing with DNA analysis to detect abnormal genetic markers from cancer or polyp cells. These tests are typically performed every three years instead of annually.
Who Should Get FOBT Testing?
Current Screening Guidelines
The U.S. Preventive Services Task Force and American Cancer Society now recommend that adults begin colorectal cancer screening at age 45. This change reflects concerning trends showing increased colorectal cancer rates among younger adults.
PromiseCare Medical Group follows these evidence-based guidelines for our Inland Empire patient population:
- Adults aged 45-75: Regular screening recommended
- Adults aged 76-85: Screening decisions made individually based on health status and prior screening history
- Adults over 85: Screening generally not recommended
Higher Risk Patients Need Earlier Screening
Your PromiseCare physician may recommend starting FOBT testing before age 45 if you have:
- Family history of colorectal cancer or polyps
- Personal history of inflammatory bowel disease (Crohn’s disease or ulcerative colitis)
- Known hereditary colorectal cancer syndromes
- Previous abdominal or pelvic radiation therapy
- Personal history of colorectal polyps
How to Perform FOBT Testing at Home
Your PromiseCare physician will provide you with a testing kit and specific instructions. The general process involves:
Preparation Steps
For FIT Tests (most common):
- No dietary changes needed
- Continue normal activities
- Avoid testing during menstruation or if you have hemorrhoid bleeding
For gFOBT Tests:
- Stop NSAIDs (ibuprofen, naproxen) 7 days before testing unless prescribed for heart protection
- Avoid vitamin C supplements over 250mg daily for 3 days before testing
- Avoid red meat for 3 days before testing
- Avoid raw fruits and vegetables for 3 days before testing
Collection Process
- Prepare your materials: Open the test kit and review all materials including test cards, collection devices, and return envelope
- Collect your sample: Most tests require samples from 1-3 different bowel movements on different days
- Flush toilet and allow bowl to refill
- Place provided collection paper over toilet water
- After bowel movement, use collection stick/brush to gather small sample
- Apply sample to designated area on test card
- Seal and store according to instructions
- Complete all required samples: Follow the schedule for multiple samples (typically 3 consecutive days for gFOBT, varies for FIT)
- Return your samples: Mail or deliver the sealed test kit to the designated laboratory or your PromiseCare physician’s office promptly
- Wait for results: Most tests provide results within 1-2 weeks
Understanding Your FOBT Results
Negative Results
A negative FOBT means no hidden blood was detected in your samples. This is good news, but remember:
- Continue regular screening according to your PromiseCare physician’s recommendations
- FOBT should be repeated annually (or every 3 years for FIT-DNA tests)
- Contact your physician if you develop symptoms between screenings
Positive Results
A positive FOBT indicates hidden blood in your stool, but this does NOT mean you have cancer. Many conditions cause intestinal bleeding:
- Benign polyps: Precancerous growths that can be removed
- Hemorrhoids: Swollen blood vessels near the anus
- Anal fissures: Small tears in anal tissue
- Diverticulosis: Pouches in the colon wall
- Ulcers: Sores in the digestive tract
- Inflammatory bowel disease: Crohn’s disease or ulcerative colitis
- Colorectal cancer: Early detection saves lives
Your PromiseCare physician will contact you promptly to discuss positive results and schedule follow-up testing, typically a colonoscopy, to determine the source of bleeding.
The PromiseCare Approach to Colorectal Health
Comprehensive Preventive Care
At PromiseCare Medical Group, we believe preventive medicine is the foundation of good health. Our physician network across Riverside County offers:
- Annual wellness visits that include colorectal cancer screening discussions
- Patient education about screening options and their benefits
- Coordinated care for follow-up testing when needed
- Access to specialists within our extensive provider network
- Insurance navigation support for our Medicare Advantage patients
Preventive Medicine Programs
PromiseCare offers several health management programs that support colorectal cancer prevention:
- Nutrition for Life Program: Dietary guidance to reduce colorectal cancer risk
- Diabetes/Pre-Diabetes Self Management Program: Important since diabetes increases cancer risk
- Weight to Go Program: Maintaining healthy weight reduces cancer risk
- Heart Health Program: Cardiovascular wellness connects to overall cancer prevention
Why FOBT Testing Matters: The Statistics
Rising Colorectal Cancer Rates in Younger Adults
Recent data reveals concerning trends:
- Colorectal cancer rates have increased among adults under 55 since the mid-2000s
- People born between 1981-1996 have twice the risk compared to those born in 1950
- In 2025, an estimated 107,320 new colon cancer cases and 46,950 new rectal cancer cases will be diagnosed in the United States
- Approximately 52,900 people will die from these cancers this year
The Power of Early Detection
Screening dramatically improves outcomes:
- Colorectal cancer is approximately 90% preventable with proper screening
- Five-year survival rate exceeds 90% when cancer is found at early stages
- Removing precancerous polyps prevents cancer from developing
- Regular screening has reduced colorectal cancer deaths in older adults who participate in screening programs
FOBT vs. Other Screening Options
How FOBT Compares
Advantages of FOBT:
- Performed at home in complete privacy
- Non-invasive with no procedure required
- No sedation needed
- No time off work required
- Lower cost than colonoscopy
- No bowel preparation needed
- Annual screening keeps you closely monitored
Limitations of FOBT:
- Cannot remove polyps like colonoscopy can
- May miss some polyps and cancers (lower sensitivity than colonoscopy)
- Positive results require follow-up colonoscopy anyway
- Must be repeated annually (or every 3 years for FIT-DNA)
- Can produce false-positive results requiring unnecessary colonoscopies
When Colonoscopy Is Necessary
Your PromiseCare physician may recommend colonoscopy instead of FOBT if you:
- Have symptoms like rectal bleeding, persistent abdominal pain, or unexplained weight loss
- Have a positive FOBT result requiring diagnostic follow-up
- Have strong family history of colorectal cancer
- Have previously had polyps removed
- Have inflammatory bowel disease requiring surveillance
- Are due for 10-year follow-up after previous clear colonoscopy
Common Questions About FOBT Testing
Is FOBT testing covered by insurance?
Most insurance plans, including Medicare Advantage plans accepted by PromiseCare, cover FOBT testing as preventive care with no copay or deductible when used for screening in age-appropriate patients. PromiseCare accepts Aetna, Alignment Healthcare, Anthem BlueCross, Anthem BlueShield California, Brand New Day, Cigna, Health Net, Humana, Scan Health Plan, and United Healthcare plans.
How accurate is FOBT?
FIT tests have approximately 87% sensitivity for detecting colorectal cancer and 96.6% specificity for significant neoplasia. However, they are less sensitive than colonoscopy for detecting small polyps. This is why annual testing is important – repeated screening increases overall detection rates.
Can I do FOBT if I have hemorrhoids?
You should avoid testing during active hemorrhoid bleeding as this can cause false-positive results. Discuss timing with your PromiseCare physician. If you have chronic hemorrhoid issues, your doctor may recommend colonoscopy as the primary screening method.
What if I can’t complete all three samples?
Contact your PromiseCare physician’s office for guidance. They can provide instructions on whether to continue collecting samples over a longer period or whether alternative arrangements are needed.
How long do results take?
Most laboratories provide FOBT results within 7-14 days. Your PromiseCare physician’s office will contact you with results. If you haven’t heard within 2 weeks, call your doctor’s office to follow up.
Taking Action: Schedule Your Screening
Contact Your PromiseCare Physician
If you’re 45 or older and haven’t had colorectal cancer screening, or if you’re due for your annual FOBT, contact your PromiseCare physician:
Member Services: 951-390-2840
Our physician network includes locations throughout Riverside County:
- Hemet community
- Murrieta area
- Temecula valley
- Corona region
- Lake Elsinore
- Menifee
- Riverside city
- And surrounding communities
What to Expect at Your Appointment
During your wellness visit, your PromiseCare physician will:
- Review your risk factors: Personal and family history, lifestyle factors, and symptoms
- Discuss screening options: FOBT, colonoscopy, or other appropriate tests
- Provide test kits: If FOBT is chosen, you’ll receive supplies and instructions
- Answer questions: Address any concerns about the testing process
- Schedule follow-up: Plan for results review and next steps
The PromiseCare Commitment to Your Health
As one of the largest Independent Physician Association networks in the Inland Empire, PromiseCare Medical Group has served Riverside County for decades with a focus on preventive medicine and patient-centered care. Our physicians understand that screening saves lives, and we’re committed to making colorectal cancer screening accessible, understandable, and as simple as possible for every patient.
Whether you choose FOBT testing at home or colonoscopy screening, the most important decision is to get screened. Early detection of colorectal cancer and precancerous polyps transforms outcomes and saves lives.
Don’t wait – talk to your PromiseCare physician today about colorectal cancer screening options that work for your lifestyle and health needs.
Medical Disclaimer
This article is for educational purposes only and is not intended to replace professional medical advice. The information provided should not be used for diagnosing or treating a health condition. Always consult your PromiseCare physician or qualified healthcare provider for personalized medical guidance, screening recommendations, and treatment decisions based on your individual health status and risk factors.
If you experience symptoms such as rectal bleeding, persistent abdominal pain, unexplained weight loss, changes in bowel habits, or other concerning symptoms, contact your PromiseCare physician immediately rather than waiting for routine screening.
PromiseCare Medical Group is an Independent Physician Association serving Riverside County, California. Insurance coverage for FOBT testing and other preventive services varies by plan. Contact your insurance provider or PromiseCare Member Services at 951-390-2840 to verify coverage details for your specific plan.