YC active company list audit

Million Marker

Million Marker: 23andMe for environmental exposures. Headquartered in San Francisco, CA, United States. Current operating status: active.

Oomira checked this YC company record against source evidence and keeps the current facts, observed dates, and provenance visible before the interactive app loads.

18 facts3 sources2 superseded claims

What changed in the audit

external name

MMW -> Million Marker
2026-06-12 · yc-oss record id 12653: field "former_names" includes "MMW"

external name

Million Marker Wellness -> Million Marker
2026-06-13 · YC directory former_names includes "Million Marker Wellness"

Summary: 23andMe for environmental exposures
Description: We are a service for people to learn about their personal environmental exposures. Our first product is a urine test for exposure to chemicals in everyday products.
Website: https://www.millionmarker.com/
Hiring: no
Headquarters: San Francisco, CA, United States
Operating status: active
Industry: Healthcare

Open the full YC audit or continue into the interactive frozen world below.