DNA Tests Reveal 1 in 4 Men Are Not the Biological Fathers of Their Children — Report

About one in four paternity tests conducted by Smart DNA Nigeria returned negative results in its 2025/2026 reporting period, its latest annual DNA Testing Report has revealed.

The company, in a statement on Sunday, August 24, 2026 in Lagos, said the report confirmed that 23.6 per cent of recorded paternity test outcomes were negative, meaning the tested man was not the biological father.

According to the report, the negative paternity outcome declined marginally from 24.0 per cent in the preceding year and 26.1 per cent in 2023.

The report, however, cautioned against interpreting the figure as evidence that one in four Nigerian children is not biologically related to the man regarded as the father.

It stressed that its clients were people who had already developed sufficient doubts or reasons to seek DNA testing.

The report also revealed that 87 per cent of DNA tests conducted were ‘Peace of Mind tests’, representing private, self-initiated tests undertaken outside legal, immigration or court proceedings.

It said the proportion increased from 83.7 per cent in the preceding reporting period, indicating that personal concerns and the desire for certainty largely drove DNA testing in Nigeria.

Immigration-related tests accounted for 9.7 per cent, legal tests 1.9 per cent, avuncular tests one per cent, while prenatal testing represented 0.4 per cent of recorded cases.

The report further showed that older men accounted for the majority of male clients seeking DNA tests, with men aged 41 years and above representing 48 per cent of age-classified male records.

Men aged between 31 and 40 accounted for another 35.8 per cent, meaning that men above 30 constituted 83.8 per cent of the male testing population.

On the other hand, 59.5 per cent of tested individuals were children aged five years and below, a figure that remained virtually unchanged from the previous reporting period.

The company said the concentration of testing among younger children suggested that many families preferred to resolve questions surrounding biological relationships early, although the data could not establish the reasons behind the trend.

Geographically, Lagos accounted for 75.1 per cent of all classified cases, rising from 69 per cent in the preceding period.

Lekki recorded the highest number of named locations in Lagos, followed by Ajah, Ikorodu, Yaba and Ikeja, while Lagos Mainland accounted for 61.6 per cent of Lagos cases with specific location classifications.

Outside Lagos, Ogun recorded the highest testing activity, followed by Delta, Oyo, Rivers, Enugu, Edo, Abuja, Imo and Kwara.

The report said testing activity outside Lagos increased during the period, suggesting that awareness and demand for DNA testing were gradually spreading across other parts of the country.

It further revealed that men initiated 78.6 per cent of recorded first contacts with the company, compared with 15.2 per cent by women.

The ethnic distribution of clients was led by Yoruba at 52.6 per cent, followed by Igbo at 29.1 per cent, Edo at 5.8 per cent and a combined 5.4 per cent for Delta, Ijaw, Isoko, Urhobo and Itsekiri groups.

The Hausa accounted for one per cent.

Smart DNA said the figures reflected its geographical and client base rather than differences in paternity behaviour among ethnic groups.

The company also warned that its findings should not be generalised to the entire Nigerian population, stressing that its clients were not a random sample of Nigerian families.

It said the 23.6 per cent negative result represented its testing population, a group in which doubts about biological relationships already existed and therefore could not be used to estimate the prevalence of non-paternity across Nigeria.

The report maintained that while DNA testing could provide highly accurate answers to biological questions, it could not independently explain the social, cultural, economic or relationship circumstances that led families to seek such tests.

It urged the public to rely on evidence rather than rumours or sensational claims when discussing paternity testing and family relationships in Nigeria.