Why you might see this term
Most urine tests are most reliable from the first day of a missed period. If you do not know when it is due, NHS advice is to test at least 21 days after the last unprotected sex.
What to keep in mind
An early negative may need repeating. A test does not confirm the location or health of a pregnancy.
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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