hemoglobinometer /-om″ətər/ [Gk, haima, blood; L, globus, ball; Gk, metron, measure] , any of several types of instruments designed to measure the concentration of hemoglobin in a blood sample. Some convert hemoglobin to stable measurable cyanmethemoglobin; others employ a detergent such as sodium dodecyl sulfate to lyse red blood cells and release hemoglobin for measurement. Also spelled haemoglobinometer.