Lynch Syndrome Genetic Testing: Who Should Be Tested and What to Expect
Lynch syndrome is the most common hereditary colorectal cancer syndrome. If you have a family history of colorectal or uterine cancer, you may qualify for testing covered by insurance.
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5-minute eligibility check
Complete at-home testing
At-home test kit if qualified
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Results reviewed with a counselor
What Is Lynch Syndrome?
Lynch Syndrome Genes, Tumor Findings, and Germline Testing
Lynch syndrome is caused by mutations in mismatch repair (MMR) genes: MSH2, MLH1, MSH6, PMS2, and EPCAM. Each gene carries different risk levels for colorectal, uterine, and other cancers.
Tumor screening — including microsatellite instability (MSI) testing and immunohistochemistry (IHC) — is sometimes performed on colorectal or uterine tumors to look for signs of MMR deficiency. An MSI-High or MMR-deficient tumor finding is a strong indicator that germline (hereditary) genetic testing may be warranted.
Germline genetic testing is the definitive test for Lynch syndrome. It analyzes your DNA directly to identify whether a heritable MMR gene mutation is present.
Who Should Consider Lynch Syndrome Testing?
- Colorectal or uterine cancer diagnosed before age 50
- Multiple relatives on the same side of the family with colorectal, uterine, ovarian, or stomach cancer
- A relative with a known Lynch syndrome gene mutation (MSH2, MLH1, MSH6, PMS2, EPCAM)
- Colorectal tumor showing microsatellite instability (MSI-High) or loss of MMR protein expression
- Personal history of multiple Lynch-associated cancers
What LifeShield Lynch Syndrome Testing Includes
NCCN-based eligibility screening
Confirms whether Lynch syndrome testing is indicated for your history
Comprehensive hereditary cancer panel
Covers MSH2, MLH1, MSH6, PMS2, EPCAM, and all major Lynch-associated genes
Licensed genetic counseling
Pre-test and post-test sessions with licensed genetic counselors
Insurance support
Superbill assistance and coverage navigation included
Is Lynch Syndrome Testing Covered by Insurance?
Most eligible patients qualify for coverage when NCCN-based criteria are met. Major US insurers cover Lynch syndrome germline testing for patients with qualifying personal or family history.
Coverage depends on your specific plan and eligibility. LifeShield provides insurance support and superbill assistance to help navigate coverage for every patient.
Reviewed by the LifeShield Medical Team · Last reviewed: March 2026
Frequently Asked Questions
Lynch syndrome is a hereditary condition caused by mutations in mismatch repair (MMR) genes. It significantly raises the lifetime risk of colorectal, uterine, ovarian, and several other cancers. It is the most common hereditary colorectal cancer syndrome.
Lynch syndrome is caused by mutations in MSH2, MLH1, MSH6, PMS2, and EPCAM. LifeShield’s panel covers all five genes along with additional hereditary cancer genes.
Most eligible patients qualify for coverage when NCCN criteria are met. Coverage depends on your plan. LifeShield includes insurance support and superbill assistance for all patients.
Lynch syndrome raises the risk of colorectal, uterine, ovarian, stomach, small intestine, urinary tract, and bile duct cancers. The specific risk depends on which gene mutation is present.
A Lynch syndrome diagnosis means first-degree relatives (parents, siblings, children) each have a 50% chance of carrying the same mutation. Cascade testing allows family members to find out their own status and take action if needed.
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It takes about 5 minutes and costs nothing. Find out whether hereditary cancer testing is recommended for you.
Check My EligibilityMedical Disclaimer: This content is for informational purposes only and does not constitute medical advice. It is based on published NCCN clinical guidelines and peer-reviewed research. Always consult a qualified healthcare provider for medical decisions. LifeShield content is reviewed by board-certified genetic counselors.