Common Lab Values. Hematology Values; Protein; Lipids; Thyroid; Cardiac. Hematology Values. HEMATOCRIT (HCT) Normal Adult Female Range: 37 - 47% Optimal Adult. PDF | On Sep 1, , Nancy Edwards and others published Interpreting laboratory values in older adults. Reference ranges for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry, the area of pathology that is generally concerned with analysis of bodily fluids. Blood test results should always be .