Social & Preventive Medicine General 8cc213c2 Cu T 200 is so called - A 200 sqmm of Cu2+ over loop B 200 mm of Cu over loop C For 200 days, Cu concentration does not changes D 200 sqcm of Cu over loop High-Yield Explanation Ans. is 'a' i.e., 200 sq. mm of Cu+ over loop o The numbers included in the names of the intrauterine devices refer to the surface area (in sq. mm) of cooper on the device.