ChatGPT SearchSep 20, 2026
Quest Diagnostics offers MTHFR DNA analysis, specifically testing the C677T and A1298C variants.
Data as of Oct 7, 2026Based on 7,901 AI responses
Reviewed by Dimitry Apollonsky ·
AI summary
Quest Diagnostics is a diagnostic lab that performs clinical laboratory tests for patients and healthcare providers and offers online booking, direct-to-consumer tests, and a patient portal.
1%2% before. Down 1 point.
of AI answers about Quest Diagnostics and its rivals. Since Jul 5
The market map
At-Home Health Test KitsQuestion: which service offers methylation testing?
ChatGPT SearchSep 20, 2026
Quest Diagnostics offers MTHFR DNA analysis, specifically testing the C677T and A1298C variants.
What is the best at-home cholesterol test?
Since Jul 5
Quest Diagnostics's share in each topic, as its page ranks it
Rank
Mentioned in
Where Quest Diagnostics ranks in AI
Google AI ModeSep 14, 2026
Quest Diagnostics Cholesterol (Lipid) Panel Go to product viewer dialog for this item.: Ideal for best medical follow-up
Question: which service offers methylation testing?
ChatGPT SearchSep 12, 2026
Quest Diagnostics offers clinical genetic testing involving methylation, including MTHFR variant testing and specific methylation assays.
Position in the answer
Week of Sep 21–27
36% of what AI says about Quest Diagnostics is positive.
questdiagnostics.com 8%Other sites 92%
Excerpts where Quest Diagnostics appeared in the AI's answer
Quest Diagnostics — Quest AI Companion. Available inside MyQuest, it can explain lab terminology and values
Excerpts where Quest Diagnostics appeared in the AI's answer
Quest Diagnostics Cholesterol (Lipid) Panel Go to product viewer dialog for this item.: Ideal for best medical follow-up
Quest Diagnostics Cholesterol (Lipid) Panel allows for quick, lab-certified testing
Excerpts where Quest Diagnostics appeared in the AI's answer
Quest Diagnostics offers MTHFR DNA analysis, specifically testing the C677T and A1298C variants.
Quest Diagnostics offers clinical genetic testing involving methylation, including MTHFR variant testing and specific methylation assays.
