- Arterial pressure. Then participants undergo blood drawing. Two types of blood samples are drawn: one for immediate biochemical analysis and another to be frozen. The freshly blood is used for instantaneous examinations for the following clinic-biochemical parameters: Insulin, Glucose, Total Cholesterol, LDL,HDL, Triglycerides, Minerals (Sodium, Potassium, Calcium, Iron), IGF-I, Testosterone, 17-ß-Estradiol, SHBG. These analyses are made for women invited to mammography screening while for people invited to colorectal screening supplemental tests are made also for vitamin D, 25 OH, PRC and high sensitive PRC.