My son is 9; plays out in the sun for 1 hour during the afternoon daily. he gets ankle pain. his blood test showed vitamin d3 at 9ng/ml. is something wrong with him? how much supplement does he need??

Yes: this show low vitamin D .Needs MD evaluation whoo can determine the dose of vitamin D supplement.An online consult with HEALTHTAP would be helpfull

Ask your local DR: My best advice is to check with your local DR about the supplement that is available in your area. Blood testing at different labs may have different "normals

Mgt/Workup: The level is low and a supplement of Vitamin D is indicated. There are many causes and more information would be helpful. I would suggest a further workup include screening tests for kidney disease. If your son takes medications, some have been associated with vitamin D deficiency. A follow up appt available online healthtap.com/DosanjhMD Code: NCYHPZ

His vitamin D: may be low but the ankle pain he gets may not be related to the low vitamin D. Also, when looking at Vit D levels total Vitamin D is important to know as well. Take him to foot/ankle doc to see what the ankle situation is.