• laboratory
  • Ideally each laboratory should set its own normal values reflecting the specific population analyzed, but this is practically limited by the availability of semen from proven fertile men who have recently achieved a pregnancy. (gfmer.ch)
  • A semen analysis is still a cornerstone laboratory evaluation and contributes to defining the severity of a possible single or contributing male factor to a couple's infertility. (journals.co.za)
  • Baker DJ, Paterson MA, Klaassen JM: Semen evaluations in the clinical laboratory. (springer.com)
  • A semen analysis is a very simple and painless test performed in the laboratory. (malefertility.md)
  • Once the semen sample is received, the SCSA® test is performed in the laboratory with an instrument called flow cytometer. (malefertility.md)
  • urethra
  • The semen is ejected through the urethra with rhythmic contractions. (wikipedia.org)
  • After the start of orgasm, pulses of semen begin to flow from the urethra, reach a peak discharge and then diminish in flow. (wikipedia.org)
  • fluid
  • The normal pH of vaginal fluid is between 3.8 and 4.5, whereas male semen is typically between 7.2 and 8.0 (a neutral substance has a pH of 7.0). (wikipedia.org)
  • They will suffer from a very low volume of semen which lacks the gel-like fluid of the seminal vesicles or from no semen at all while they are able to have the sensation of an orgasm during which they will have involuntary contractions of the pelvic musculature. (wikipedia.org)
  • parameters
  • Normal values of semen parameters have been issued by WHO in 1992 that are generally used as reference. (gfmer.ch)
  • It should be emphasized that semen is an exception amongst biological fluids since its parameters display very wide intra and inter-individual variations. (gfmer.ch)
  • Therefore semen analysis should be repeated to take intra-individual variations over time into account and confirm abnormal parameters. (gfmer.ch)
  • It can be used for automatic identification of sperm and automatic tracking of sperm movement, finish the analysis for a number of parameters in conformity with the WHO international standards fast and take comprehensive quantitative analysis of sperm activity and static characteristics. (alibaba.com)
  • An increasing amount of recent evidence has been recorded documenting abnormal sperm DNA methylation in association with abnormal semen parameters and male infertility. (wikipedia.org)
  • antibodies
  • However, there is little correlation between circulating antibodies (in the blood) and sperm-bound antibodies (in the semen). (drmalpani.com)
  • Gandini L, Menditto A, Chiodo F, Lenzi A: Italian pilot study for an external quality control scheme in semen analysis and antisperm antibodies detection. (springer.com)
  • intra
  • Carrell DT, Cornwell CE, Thorp C, Cartmill DC, Urry RL: Evaluation of a five year intra and interlaboratory semen analysis quality control program. (springer.com)
  • test
  • Sometimes a test called cryosurvival is done to see how well semen will survive for long-term storage if a couple would like to store sperm for future pregnancies . (labtestsonline.org)
  • The semen analysis test is usually done manually, though computerized test systems are available. (faqs.org)
  • fertilization
  • Semen, like many other body fluids, hasa standard pH range that would be considered optimal for fertilization of the egg to take place. (faqs.org)
  • Semen quality is a measure of the ability of semen to accomplish fertilization. (wikipedia.org)
  • counts
  • A 2017 review and meta-analysis found sperm counts among Western men (i.e. men in Australia, Europe, New Zealand, and North America) declined 50-60% between 1973 and 2011, with an average decline of 1.4% per year. (wikipedia.org)
  • clinical
  • Clinical Chemistry: Units under this busy section include instrumental analysis of blood components, enzymology, toxicology and endocrinology. (wikipedia.org)