August 2, 2013 15mo 15mo checkup. Weight 22lb 4oz / 50-75%; Length 31 inches / 50-75%; Head circumference 18.5 inches / 75%. DTaP-Hib-IPV, PCV. Share: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Pinterest (Opens in new window) Pinterest Like Loading...