CRP and cytomegalovirus infection: BioAge is constructed from ten clinical markers and physiological measures known to be associated with the aging process, including systolic blood pressure (SBP), total cholesterol, fasting glucose, cytomegalovirus (CMV) infection, C-reactive protein (CRP), serum creatinine, blood urea nitrogen (BUN), alkaline phosphatase, albumin, and peak flow measurement [32].