Sign in →

Test Code POSV Post Vasectomy Check, Semen

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Semen


Shipping Instructions


Specimen must arrive within 24 hours of collection. Send specimen Monday through Thursday only and not the day before a holiday. If holiday falls on a Saturday, holiday will be observed on the preceding Friday. Sunday holidays are observed on the following Monday. Specimen should be collected and packaged as close to shipping time as possible. Laboratory does not perform testing on weekends.



Necessary Information


Include the following information with the specimen:

-Semen volume

-Number of days of sexual abstinence



Specimen Required


Patient Preparation: Patient should have 2 to 7 days of sexual abstinence at the time of semen collection for accurate results.

Container/Tube: Semen Analysis Kit (T178)

Specimen Volume: Total ejaculate


Specimen Minimum Volume

See Specimen Required

Specimen Stability Information

Specimen Type Temperature Time
Semen Ambient

Reference Values

Zero sperm seen

Day(s) Performed

Monday through Friday

CPT Code Information

89321

Clinical Information

Following a vasectomy, sperm may be found in the semen for 6 weeks to 3 months or longer. Regular ejaculation (every 3-4 days) may eliminate sperm from the reproductive tract more quickly.

 

To check for the absence of sperm, semen should be evaluated for the presence of sperm 3 months postvasectomy and after a minimum of 20 ejaculations. Because the sperm count may be very low, the semen is centrifuged for concentration purposes.

 

A negative result from 1 well-mixed postvasectomy semen specimen generally indicates that the use of contraception is no longer necessary. Occasional cases have been reported where postvasectomy semen analysis shows intermittent presence of rare nonmotile sperm in the semen.(1)

Report Available

1 day

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Method Name

Manual