Postvasectomy Sperm Evaluation, Qualitative
Also known as: Semen Analysis, Postvasectomy
Use
Complete absence of sperm in this test is considered a negative result. Incomplete ejaculation and/or incomplete collection of total ejaculate may cause false-negative results.
Special Instructions
It is important to ensure the complete collection of the seminal fluid during the specimen collection process. Incomplete collection can lead to false-negative results. Patients should abstain from ejaculation for two to seven days prior to collecting the specimen.
Limitations
The test may return false-negative results in cases of incomplete ejaculation or insufficient specimen volume. Specimens must be handled correctly to avoid temperature extremes during transportation, which may affect the stability and integrity of the sample. Additionally, the presence of lymphocytes or other cells could potentially interfere with the evaluation, although it is rare.
Methodology
Other
Biomarkers
LOINC Codes
- 29990-9
- 3160-9
- 29990-9
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Other
Volume
Entire ejaculate
Minimum Volume
Any volume
Container
Clean, no additive container; nonspermicidal condom is acceptable.
Collection Instructions
Collect seminal fluid by masturbation only. Collect entire ejaculate into the specimen container. Avoid the use of lubricants and other contaminants. Avoid temperature extremes during transportation.
Patient Preparation
Abstinence from ejaculation: Two to seven days prior to collection.
Storage Instructions
Transport specimens to the laboratory at ambient temperature or refrigerated. Do not freeze. If refrigerated, sample must be brought to room temperature prior to testing.
Causes for Rejection
Frozen specimens; specimens greater than 72 hours from collection; samples collected in spermicidal condoms
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 72 hours |
| Frozen | Unstable |