âTennis players often have problems with their knees, ankles, shoulders, hips, and wrists, so they really need to spend some time on those areas to get the tension out.â. This means that youâll be more likely to keep on truckinâ if you practice your poses off the court.
Normal value ranges for vitamin B12 vary slightly among different laboratories and can range anywhere between 200 to 900 pg/mL. The general consensus is values less than 200 pg/mL constitute a B12 deficiency.
Vitamin B12 Test. You should be fasting for six to eight hours before a B12 blood test. Although reference ranges can vary from lab to lab, the normal readings for vitamin B12 are approximately 200 to 900 picograms per milliliter, or pg/ml, of blood. Below 200 pg/ml indicates deficiency.