title: Assessment of the Sperm Quality Analyzer.
abstract: OBJECTIVE
  To assess the relationship between the results of the Sperm Quality Analyzer (United Medical Systems Inc., Santa Ana, CA), which measures motile sperm concentration by light scattering, conventional manual semen analysis characteristics, and computer-assisted sperm motility analyses.
  
  
  METHODS
  Sperm Quality Analyzer measurements and manual and computer-assisted semen analyses were performed on 150 (50, 62, and 38) samples in three laboratories and the results were compared.
  
  
  METHODS
  The study was performed in the Andrology Laboratory of Prince Henry's Institute of Medical Research, Monash Medical Centre, and Andrology Laboratory and Reproductive Biology Unit at the Royal Women's Hospital, Melbourne, Victoria, Australia.
  
  
  METHODS
  Patients presented to the laboratories for routine fertility evaluation in the male and were selected at random to reflect the range of normal and abnormal samples seen in the laboratories.
  
  
  METHODS
  None.
  
  
  METHODS
  Sperm count, motility (percent motility, motility index, velocity, and amplitude of lateral head displacement [ALH]), morphology, and normal acrosomes were evaluated by manual and computer-assisted semen analysis and sperm quality analyzer motility index.
  
  
  RESULTS
  Spearman nonparametric univariate analysis showed strong correlations between sperm motility index and manual sperm concentration, motility, abnormal morphology, and normal acrosomes by Pisum sativum agglutinin; and computer-assisted sperm motility analysis sperm concentration, motile concentration, and percent static. Curvilinear velocity, straight-line velocity (VSL), and linearity also were related significantly to sperm motility index values. By multiple regression analysis, the significant covariates of the sperm motility index were motile sperm concentration, abnormal morphology, ALH, and straight-line velocity and these accounted for 85.5% of the variance of the sperm motility index.
  
  
  CONCLUSIONS
  The Sperm Quality Analyzer is easy to use. The good correlation between the sperm motility index, motile sperm concentration, and, in addition, a number of other semen parameters supports the use of the Sperm Quality Analyzer for screening patients and in situations that warrant a rapid verification of semen quality, such as in the IVF or artificial insemination clinic. Further investigation of the Sperm Quality Analyzer in the management of male infertility is warranted.
authors.affiliation: Prince Henry's Institute of Medical Research, Clayton, University of Melbourne, Victoria, Australia.
authors.forename: R C
authors.initials: RC
authors.lastname: Johnston
authors.forename: G N
authors.initials: GN
authors.lastname: Clarke
authors.forename: D Y
authors.initials: DY
authors.lastname: Liu
authors.forename: H W
authors.initials: HW
authors.lastname: Baker
mesh_terms: D000177:Acrosome / Q000648:ultrastructure; D003201:Computers; D006801:Humans; D007231:Infant, Newborn; D007248:Infertility, Male / Q000175:diagnosis; D008297:Male; D011786:Quality Control; D012044:Regression Analysis; D013076:Sperm Count; D013081:Sperm Motility; D013094:Spermatozoa / Q000002:abnormalities / Q000648:ultrastructure