Edmund Faustyn Biernacki (19 December 1866 in

Opoczno Opoczno ) is a town in south-central Poland, in eastern part of Łódź Voivodeship (since 1999), previously in Piotrków Trybunalski Voivodeship (1975–1998). It has a long and rich history, and in the past it used to be one of the most importa ...

– 29 December 1911 in

Lwów Lviv ( uk, Львів) is the largest city in western Ukraine, and the seventh-largest in Ukraine, with a population of . It serves as the administrative centre of Lviv Oblast and Lviv Raion, and is one of the main cultural centres of Ukraine ...

) was a Polish

physician A physician (American English), medical practitioner (Commonwealth English), medical doctor, or simply doctor, is a health professional who practices medicine, which is concerned with promoting, maintaining or restoring health through th ...

. Biernacki was the first one to note a relationship between the sedimentation rate of red blood cells in a human blood sample and the general condition of the organism. This method, known as the Biernacki Reaction, is used worldwide to assess

erythrocyte sedimentation rate The erythrocyte sedimentation rate (ESR or sed rate) is the rate at which red blood cells in anticoagulated whole blood descend in a standardized tube over a period of one hour. It is a common hematology test, and is a non-specific measure of ...

(ESR), which is one of the major

blood test A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or via fingerprick. Multiple tests for specific blood components, such as a glucose test or a cholester ...

References

See also