Biomarker category
Blood counts
Complete blood count components including hemoglobin, white cells, and platelets.
General biomarker education — not personalized medical advice. Learn more
Read the related panel guide →
White blood cell count
WBC count is part of a complete blood count (CBC) and reflects the number of white blood cells in a sample.
Red blood cell count
RBC count is part of a complete blood count (CBC) and reflects how many red blood cells are in a sample.
Hemoglobin
Hemoglobin is the protein in red blood cells that carries oxygen, measured on a CBC.
Hematocrit
Hematocrit is the percentage of blood volume made up of red blood cells, part of a CBC.
MCV
MCV describes the average size of red blood cells and is one of the CBC red-cell indices.
MCH
MCH estimates the average amount of hemoglobin inside each red blood cell.
MCHC
MCHC estimates the concentration of hemoglobin within red blood cells.
RDW
RDW describes how much variation there is in the size of red blood cells.
Platelets
Platelets help blood clot and are counted as part of a complete blood count.