In an improved method for measuring the erythrocyte sedimentation rate (ESR) a pre-evacuated test tube (T) is used to collect a blood specimen. The tube (T) is made of a material such as glass or plastics and contains an anticoagulant agent. In order to facilitate mixing of the blood sample a surfactant...http://www.google.es/patents/US5779983?utm_source=gb-gplus-sharePatente US5779983 - Test tube for determining the erythrocyte sedimentation rate and a surfactant for use therein
Test tube for determining the erythrocyte sedimentation rate and a ...
