A baby girl who weighed about the same as a large apple when she was born five months ago has gone home from a San Diego hospital.

Saybie is believed to be the tiniest baby ever to survive.

She weighed 245g (8.6 ounces) when she was born in December at Sharp Mary Birch Hospital for Women and Newborns, the hospital said in a statement announcing her birth and discharge on Wednesday.

Saybie weighed a little more than a large Golden Delicious apple, which usually is about 7.5 ounces.

She is believed to have broken the record for the world's tiniest baby, according to the Tiniest Babies Registry.

RTÉ News on social media

Follow us on Twitter
Like us on Facebook
Follow us on Instagram

The record was previously held by a baby who weighed 8.9 ounces when she was born in Germany in 2015, according to the registry, which is maintained by the University of Iowa.

In December, Saybie's mother, who wished to remain anonymous, gave birth through emergency caesarean section at 23 weeks, three days gestation in the womb, about 17 weeks earlier than the typical pregnancy, the hospital said.

Saybie, considered a micro preemie, was treated in the hospital's neonatal intensive care unit until she was discharged to go home in May, when she weighed 2.5kg (5.6 pounds), according to the hospital.