HHow does the automated QA instrument work?
The liquefied semen is sucked up a specially designed disposable capillary, which has a precise cross section, and inserted into the instruments optical chamber. A precision light beam passes through the capillary. The resulting small changes in the light due to passing/moving sperm cells is picked up by the fiber optic sensor and measured by a phototransistor, or light sensor. That signal is digitized and fed to a built-in computer, which uses a sophisticated algorithm to analyze the data and generate the displayed results. 3. The various displayed results: The conventional W.H.O. parameters of the total cell concentration, percent motile cells, percent motile cells and percent normal morphology are reported. In addition, the instrument generates the Sperm Motility Index (SMI) and Total Functional Sperm Concentration (TFSC). For details, please see Definitions & Interpretation of the five Computerized Parameters.
