A giant panda whose twin cubs captured international attention has undergone a CT scan after vet discovered one of his kidneys was smaller than the other.

Berlin Zoo said nine-year-old Jiao Qing was examined last week by experts at the city’s Leibniz Institute for Zoo and Wildlife Research after the discrepancy was picked up on an ultrasound.

Jiao Ling is prepared for the examination
Jiao Ling is prepared for the examination (Berlin Zoo/AP)

He will now be monitored to determine whether the smaller kidney is functioning properly.