Why you might see this term
Record the interval because it helps the laboratory interpret the sample. ProFertility kit instructions use 2–5 days; another clinic may give a different interval.
What to keep in mind
Longer is not automatically better. Follow your own laboratory instructions and confirm return arrangements before producing a mail-in sample.
Sources & further reading
Prepared by ProFertility · Updated 23 October 2026.
Educational information based on the linked sources. This explanation is not an individual diagnosis or a treatment recommendation. A term appearing here does not mean the test is necessary or included in a particular kit.
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