I have arthritis in my knees & pain in my lower legs had a full blood workup. eveything ok except folate at 15.3, vitamin d at 16.5, rnp .9 what 2 do?

Treat arthritis: Your pain is likely coming from the arthritis, and not related to the lab values. You should ask your doctor about treatment for the knee arthritis. Usually best to start with conservative treatments such as weight loss, activity modifications, anti-inflammatory agents. Injections of steroid or hyaluronic acid might also be offered. Replacement can be used for severe arthritis.