Florida Couple Sues Fertility Clinic After DNA Test Reveals Husband Is Not Biological Father

A Florida couple has filed a lawsuit against a fertility clinic, alleging that the clinic used sperm from an unidentified man during an IVF procedure, resulting in the husband having a "zero percent probability" of being the biological father of their child. Natalie and Joshua Strong, who pursued IVF for years, welcomed a daughter in 2025 after a second round of treatment. However, routine blood work shortly after her birth revealed a discrepancy in blood type, prompting a DNA test that confirmed Joshua was not the biological father.

The couple claims that Brown Fertility in Jacksonville used the wrong sperm to create the embryo that resulted in their daughter's conception. The clinic has denied the allegations, according to CNN. The Strongs are now seeking answers about the identity of their daughter's biological father and what happened to Joshua's sperm.

This alleged mix-up has raised further concerns for the couple, as they still have three remaining embryos at the clinic, and they do not know whose sperm was used to create them. Joshua Strong also expressed worry that his own sperm may have been mistakenly used in another patient's IVF treatment.

Natalie and Joshua Strong began their IVF journey in 2023, experiencing a failed attempt before their second round was successful. "We finally got our beautiful baby girl, and it was the best day of my life," Natalie told CBS News. The joy, however, was short-lived. The lawsuit states that their daughter's blood type was B positive, which was incompatible with both Natalie and Joshua having negative blood types, leading Joshua to suspect an error almost immediately.

Despite the emotional turmoil, Natalie emphasized that the discovery has not altered her love for her daughter. "I was so happy I had her and I love her more than anything in the world," she said. Joshua echoed these sentiments, describing the situation as a "struggle" with difficult emotions.

The couple's attorney, Rob Marcereau, stated that the lawsuit was filed after nearly a year of attempting to get answers from Brown Fertility, with whom they claim to have received no satisfactory response. The litigation aims to determine what occurred, whose sperm was utilized, and how such an error could have happened.

A spokesperson for Brown Fertility declined to comment on the case, citing ongoing litigation. The Strongs' plans to expand their family are on hold, and arrangements are being made to move their remaining embryos. Natalie expressed a desire for the clinic to improve its practices to prevent similar incidents from affecting other families.

Attorneys for the couple have described the fertility industry in the U.S. as lacking comprehensive regulation, which they believe can contribute to errors due to inadequate staffing, training, and quality controls. The couple hopes that by sharing their story, they can prevent other couples from enduring a similar devastating experience.