Медицинская лаборатория Гемотест (Gemotest) data breach

Breach date: 2022-04-22. Added to this index: 2025-12-24. Accounts affected: about 6.3M. Domain: gemotest.ru.

What happened

In April 2022, Russian pharmaceutical company Gemotest suffered a data breach that exposed 31 million patients. The data contained 6.3 million unique email addresses along with names, physical addresses, dates of birth, passport and insurance numbers. Gemotest was later fined for the breach.

Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.

What was exposed

  • Dates of birth: Your full birth date, day, month and year, collected at signup for age checks, identity verification, insurance quotes, birthday offers or government services.
  • Email addresses: The email address you used to register or log in. It is the most common field in breaches because it doubles as your username on most sites.
  • Genders: The gender or sex recorded on your profile, usually picked from a list at signup, sometimes with a title such as Mr or Ms or a gender identity option beyond male and female.
  • Government issued IDs: Numbers or images of official identity documents, such as passports, national identity cards, Social Security numbers, Medicare cards, tax file numbers, residence permits and voter cards.
  • Health insurance information: Your health insurer, policy or member number, Medicare or national health card number, level of cover, claims history and sometimes the treatments and providers you claimed for.
  • Names: Your first name, surname and sometimes middle name or initials, as you gave them when you signed up. It appears in almost every breach because nearly every account asks for it.
  • Passport numbers: The unique number printed on your passport, often stored with your full name, nationality, date of birth and expiry date by airlines, hotels, travel agents, exchanges and identity verification services.
  • Physical addresses: Your residential, postal, billing or delivery address, stored by retailers, utilities, banks, government services and almost any company that sends you something.

What to do now

  1. Check whether your own address is in this dataset with the free email breach check.
  2. Review the accounts connected to this service and turn on two-factor authentication.
  3. Turn on two-factor authentication on your email account first, because it is the reset path for everything else.
  4. Treat calls and messages that quote real details about you as hostile until you verify them another way.

Frequently asked questions

What data was leaked in the Медицинская лаборатория Гемотест (Gemotest) breach?

The Медицинская лаборатория Гемотест (Gemotest) breach exposed Dates of birth, Email addresses, Genders, Government issued IDs, Health insurance information, Names, Passport numbers, Physical addresses. About 6.3M accounts were affected.

Was I affected by the Медицинская лаборатория Гемотест (Gemotest) breach?

Run the free email breach check with the address you used on that service. It will tell you whether your address appears in this dataset.

What should I do about the Медицинская лаборатория Гемотест (Gemotest) breach?

Treat any message that quotes details from this breach as suspicious, turn on two-factor authentication, and consider removing your details from people-search sites if your address or phone was included.

Next steps