Rh negative is a blood type that refers to the presence or absence of the Rh factor, a protein found on the surface of red blood cells. Someone with Rh negative blood lacks this protein.
It's important to note that Rh negative isn't a blood type on its own, but rather a characteristic that can be present in any of the four main blood types:
- A negative
- B negative
- AB negative
- O negative
So, to answer your question directly, any of the four main blood types can be Rh negative.
For example, someone with blood type A can be either Rh positive (A+) or Rh negative (A-). The same applies to blood types B, AB, and O.
Rh negative blood is less common than Rh positive, with about 15% of people worldwide being Rh negative.
