Based on the determination coefficient (R2), other than serum albumin and total protein, there is no demonstrable significant correlation shown and the ability of ATIR-FTIR spectroscopy to accurately discriminate between AD and DR was independent of organ system involvement, detectable circulating ANCA, ANCA titre in cases of seropositive disease, renal function, commonly used markers of inflammation and other salient laboratory results. The gene discussed is ALB; the disease is Alzheimer disease.