As reported by the Austin American-Statesman, more people are now receiving at-home colon cancer screening kits by mail.
In recent years, colorectal cancer has been showing up in younger adults — and it’s changing how doctors approach screening. The American Cancer Society now recommends that most adults begin screening at age 45 instead of 50.
If you’ve recently received a colon cancer screening kit in the mail, you’re not alone. Many insurance plans and primary care providers are mailing stool- or blood-based tests directly to patients’ homes. These options are convenient, but they’re not a replacement for a colonoscopy — the gold standard in detecting and preventing colorectal cancer.
Screening Options: A Helpful Starting Point
Mail-in stool tests such as Cologuard® , and newer blood-based options like Shield, detect small amounts of blood or abnormal DNA that may suggest cancer or advanced polyps.
These tests are designed for people at average risk who want a simple way to screen for colorectal cancer. If results come back normal, you typically repeat the test every one to three years depending on the type.
However, if your test shows an abnormal result, you’ll still need a follow-up colonoscopy to confirm the findings and remove any polyps. That’s because stool and blood tests can detect possible signs of cancer — but they can’t prevent it.
Colonoscopy: The Most Complete Screening Option
A colonoscopy remains the most comprehensive screening tool because it does two things at once: it finds polyps and removes them before they become cancerous.
“The advantage of colonoscopy is prevention,” says Dr. David Kim, board-certified gastroenterologist at Austin Gastroenterology. “When we find and remove a polyp during a colonoscopy, we’re literally stopping cancer before it starts.”
A colonoscopy is usually needed only once every 10 years for people at average risk. It’s performed under sedation, is typically covered by insurance as a preventive service, and provides peace of mind that your colon has been fully examined.
A Note About Costs and Insurance
Many people don’t realize that if an at-home test comes back positive, the follow-up colonoscopy may be billed as diagnostic, not preventive — which could mean a copay or deductible.
If you choose to start with a colonoscopy, it’s typically covered in full as a screening procedure, as long as you’re within the recommended age range and don’t have symptoms.
Know Your Risk
Colorectal cancer doesn’t always cause symptoms in its early stages. However, you should talk to your doctor about earlier or more frequent screening if you have:
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A family history of colorectal cancer or polyps
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A history of inflammatory bowel disease (Crohn’s or ulcerative colitis)
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Unexplained changes in bowel habits or rectal bleeding
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Abdominal pain or unexplained weight loss
Your physician can help determine which screening option best fits your health history, risk factors, and comfort level.
The Bottom Line
Whether you choose an at-home test or a colonoscopy, the most important step is to get screened. When detected early, colorectal cancer has a five-year survival rate of more than 90% — but that number drops sharply if diagnosis happens later.
At-home options can make screening more accessible, but colonoscopy remains the most effective way to detect and prevent colorectal cancer.
Take the Next Step
If you’re 45 or older — or have a family history of colorectal cancer — talk to your doctor about which screening test is right for you.
Austin Gastroenterology offers direct or open-access colonoscopy scheduling, meaning you can skip the referral step and schedule your screening directly.
👉 Protect your health — schedule your colonoscopy today.
Source: “Colon cancer screening starts at 45–but which test is right for you?” Austin American-Statesman, October 2025. Read the full article here.
