Mean corpuscular hemoglobin

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Not to be confused with mean corpuscular hemoglobin concentration, although they are predictably correlated in healthy states.

The mean corpuscular hemoglobin (MCH), or "mean cell hemoglobin" (MCH), is the average mass of hemoglobin per red blood cell in a sample of blood. It is reported as part of a standard complete blood count. MCH value is diminished in hypochromic anemias.[1]

It is calculated by dividing the total mass of hemoglobin by the number of red blood cells in a volume of blood.

MCH=(Hgb*10)/RBC [2]

A normal value in humans is 27 to 31 picograms/cell.[1] Conversion to SI-units: 1 pg of hemoglobin = 0.06207 femtomol.[3] Normal value converted to SI-units: 1.68 - 1.92 fmol/cell.

See also[edit]

Worked example[edit]

Measure Units Conventional units Conversion
Hct 40%
Hb 100 grams/liter 10 grams/deciliter (deci- is 10−1)
RBC 5E+12 cells/liter 5E+6 cells/μL (micro is 10−6)
MCV = Hct / RBC 8E-14 liters/cell 80 femtoliters/cell (femto- is 10−15)
MCH = Hb / RBC 2E-11 grams/cell 20 picograms/cell (pico- is 10−12)
MCHC = MCH / MCV 250 grams/liter 25 grams/deciliter (deci is 10−1)

References[edit]

  1. ^ a b "MedlinePlus Medical Encyclopedia: RBC indices". Retrieved 2009-03-03. 
  2. ^ "Mean Cell Hemoglobin". Retrieved 2009-03-03. 
  3. ^ Praktikum der Hundeklinik (10 ed.). 2006. p. 102. ISBN 3-8304-4141-X. 

External links[edit]

RBS are also found in human batter then wbc