Description

An athlete with more erythrocytes has a greater oxygen carrying capacity and so can perform better than if s/he had fewer erythrocytes. Attempts to artificially increase an athelete's red blood cell mass is termed "blood doping". This practice has been banned for international sports competition.


Method of Blood Doping

Detection

allotransfusion

venipuncture site, identify circulating red blood cells with different phenotype than patient, low serum erythropoietin level

autotransfusion

venipuncture site, low serum erythropoietin level

administration of erythropoietin

elevated serum erythropoietin levels

 

Needless to say, these can be difficult to prove and would be easier to mask.

 

One screening test would be to look for an hematocrit > 49% for males and > 46% for females, but this would not be either sensitive nor specific.

 

Some would also include training at high altitudes as a form of blood doping, although this could be argued.

 

The hazards of excessive erythrocytosis include:

(1) hyperviscosity syndrome

(2) hypertension

(3) heart failure

(4) stroke

 


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