Semen Analysis, Post-Vasectomy**

Code

PVAS

Sample Reqs

Semen [1]

Turnaround

2 days

Special instructions

[1] Contact the laboratory for special sample tubes/containers/instructions.


** For men who have had a vasectomy, clearance should only be given when there is no evidence of presence of sperm in a single ejaculate when recommendations are met. It is rare that a ‘diagnosis’ is made without confirmation, therefore patients/clinicians should be able to freely request a second confirmatory sample. Special clearance may be given at the doctor’s discretion, when there are <100 000/ml non-motile sperm present after the assessment of two specimens in full accordance with recommendations. Recommendations, as given by the Association of Biomedical Andrologists, the British Andrology Society and the British Association of Urological Surgeons 2016, are as follows:

  1. Analysis of post vasectomy semen samples should not occur until 12 weeks post-surgery and after a minimum of 20 ejaculates
  2. Semen samples must be analysed within 4 hours of production, and in cases where sperm is found a repeat analysis must be performed within 1 hour of production
  3. Semen should be provided in weighed specimen containers provided by TDL Andrology
  4. Sexual abstinence should be between 2 and 7 days.

More details

See the Sample Requirements page for an explanation of the sample requirements code listed above.

See the Special Instructions Legend page for a full list of special instructions.

Last-updated: 28/02/2020

 

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