The best replacement for hemoglobin is hematocrit.

The best alternatives to hemoglobin are rated as following:
★★★★★  hematocrit
★★★★★  myoglobin
★★  iron
★★  chlorophyll
★  a1c
★  hemoglobin a1c
★  rbc
★  red blood cells
★  haemoglobin
★  ferritin
★  myoglobin affinity for oxygen
★  hba1c
★  iron levels
★  hemocyanin
★  myoglobin structure
  hemoglobin
  red blood cell
  iron level
  hematocrit test
  maternal hemoglobin
  ferritin levels
  myoglobin differences
  deoxygenated hemoglobin
  red cell count
  decreased erythrocytes
  too few erythrocytes
  deoxygenated
  hematocrit level
  insulin
  transferrin
  number of red blood cells
  hematocrit iron levels
  hct
  methemoglobin
  iron stores
  chlorophyll structure
  venous hemoglobin
  hematocrit levels
  sickle cell hemoglobin

Your alternative for hemoglobin is not listed? Suggest!
Speaking about hemoglobin, one probably shouldn't forget about heme.

Other search terms related to hemoglobin and their ratings are:
★★★★★ heme
★★★★ low hematocrit
★★★★ carbon monoxide
★★★ bpg
★★ low ferritin
★★ high platelet count
★★ anemia
★★ mcv
★ low iron
★ red blood cells
★ normal iron
★ bohr effect
★ red cells
★ iron deficiency
carbon monoxide and oxygen
dpg
You have in mind a companion for hemoglobin and it is not yet here? Propose!



Google Trends

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hemoglobin
hematocrit
myoglobin