Blood Count
Hemoglobin
A protein in red blood cells that carries oxygen.
blood-countironvitaminsoxygen
About this biomarker
Hemoglobin is the oxygen-carrying protein inside red blood cells. It is one of the main markers used to assess anemia and red blood cell status.
Why it matters
It helps show whether the blood is carrying a typical amount of oxygen.
What lower levels may suggest
Low hemoglobin suggests anemia or blood loss and may have many possible causes.
What higher levels may suggest
High hemoglobin may be seen with dehydration, smoking, chronic low oxygen states, or certain blood disorders.
Common tests
Complete blood count, CBC
Related biomarkers
Your trend
Loading your results…