Wishing Dr. Counts a Wonderful Retirement! Dr. Wynd Counts will be retiring on November 14, 2025.
Health Library

Health Library

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Blood type

Human blood is typed according to whether certain markers, called antigens, are present on the surface of red blood cells. The ABO system classifies blood as type A, B, AB, or O based on the presence or absence of the A and B antigens; the Rh system classifies blood as negative or positive based on the presence or absence of the Rh antigen (Rh factor).

If red blood cells have:

  • The A antigen, they are type A blood.
  • The B antigen, they are type B blood.
  • Both the A and B antigens, they are type AB blood.
  • Neither A nor B antigens, they are type O blood.

Rh blood typing determines the presence (+) or absence (–) of the Rh factor. If red blood cells:

  • Have the Rh antigen, they are Rh-positive.
  • Do not have the Rh antigen, they are Rh-negative.

Current as of: October 7, 2024

Author: Ignite Healthwise, LLC Staff

Clinical Review Board
All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.

Happy Upcoming Retirement, Dr. Counts!

After 31 years of dedicated care, Dr. Wynd Counts will be retiring on November 14, 2025. We are grateful for her incredible impact and invite you to join us in congratulating her on a well-earned retirement. Her trusted colleagues at Women’s Care of Alaska will continue to provide the exceptional care you deserve.

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