Medically Reviewed by Jennifer Robinson, MD on August 24, 2022
Question 1/7

There are this many major blood types:

  • 2
  • 4
  • 6
Question 2/7

The Rh factor is:

  • The color of your blood
  • The number of red blood cells you have
  • Another kind of antigen
Question 3/7

People with this blood type have a lower risk of heart disease:

  • A
  • B
  • O
Question 4/7

This blood type can be used by anyone:

  • O negative
  • O positive
  • A positive
Question 5/7

People with this type can use blood from anyone else:

  • AB positive
  • AB negative
  • O positive
Question 6/7

You can lose weight easier if you base your diet on your blood type.

  • True
  • False
Question 7/7

This factor can cause problems during pregnancy:

  • Rh negative
  • Rh positive