<unk> s (also spelled<unk> <unk> s in British English) are used to count and identify blood cells at high speed with accuracy. During the 1950s, laboratory technicians counted each individual blood cell underneath a microscope. Tedious and inconsistent, this was replaced with the first, very basic<unk> , engineered by Wallace H. Coulter. The early<unk> s relied on Coulter's Principle (see Coulter counter). However, they have evolved to encompass numerous techniques.
Hematology analyzer
Clinical chemistry
Glucose meter
Steatocrit
Hematocrit
Blood smear
Glycated hemoglobin
Blood urea nitrogen