Bilirubin Standard Kit comprising of bilirubin conjugate in a base of bovine serum albumin for laboratory and research use in calibration or verification of medical diagnostic test equipment; for Chemistry Reference Kit containing sodium, potassium, chloride, calcium, phosphorus, magnesium, glucose, urea nitrogen, creatinine and triglyceride in base of bovine albumin for calibration or verification of medical diagnostic test systems; for Total Protein / Albumin Standard Kit consisting of albumin and bovine gamma globulin for calibration or verification of medical diagnostic test systems; for Electrolyte Standard Kit consisting of sodium, potassium, chloride, lithium and ionized calcium in a base of bovine albumin for calibration or verification of medical diagnostic test systems; for Carbon Dioxide Standard Kit consisting of carbon dioxide for calibration or verification of medical diagnostic test systems; for Cholesterol Reference Kit consisting of cholesterol and uric acid for calibration or verification of medical diagnostic test systems; for Multi-Enzyme Verifier Kit consisting of aspartate aminotransferase, alanine aminotrasferase, alkaline phosphatase, lactate dehydrogenase, creatine phosphokinase, gamma glutamyltransferase, alpha-amylase and lipase for calibration or verification of medical diagnostic test systems; for Enzyme ER Verifier Kit consisting of aspartate aminotransferase, alanine aminotrasferase, alkaline phosphatase, lactate dehydrogenase, creatine phosphokinase, gamma glutamyltransferase, alpha-amylase, lipase and cholinesterase for calibration or verification of medical diagnostic test systems; for Tru-Zero Bilirubin Standard consisting of zero levels of bilirubin in a base of bovine serum albumin for calibration or verification of medical diagnostic test systems; for Electrolyte Control Kit consisting of normal and abnormal levels of sodium, potassium, chloride, lithium and ionized calcium in a base of bovine albumin for routine control of medical diagnostic test systems; for Ammonia / Iron Standard Kit consisting of ammonia and iron for calibration or verification of medical diagnostic test systems; for Microprotein Standard Kit consisting of trace levels of albumin and gamma globulin for calibration or verification of medical diagnostic test systems; for HDL Cholesterol Verifier Kit consisting of high and low density lipoprotein cholesterol in a base of human albumin for calibration or verification of medical diagnostic test systems; for Urine Chemistry Standard Kit containing sodium, potassium, chloride, calcium, phosphorus, magnesium, urea nitrogen, and creatinine in dilute sulfuric acid for calibration or verification of medical diagnostic test systems; for Ethanol Standard Kit consisting of ethanol, lactate, acetaminophen and salicylate in a base of bovine albumin for calibration or verification of medical diagnostic test systems; for Iron Standard consisting of iron for calibration or verification of medical diagnostic test systems; for Lipase Verifier consisting of lipase for calibration or verification of medical diagnostic test systems; for Low Level Enzyme Veriifer Kit consisting of aspartate aminotransferase, alanine aminotrasferase, alkaline phosphatase, lactate dehydrogenase, creatine phosphokinase, gamma glutamyltransferase, alpha-amylase and lipase for calibration or verification of medical diagnostic test systems; for Bilirubin Mid-Range Standard Kit comprising of bilirubin conjugate in a base of bovine serum albumin for laboratory and research use in calibration and linearity evaluation of medical diagnostic test equipment; for Triglyceride Reference consisting of triglyceride for calibration or verification of medical diagnostic test systems; Lipoprotein Verifier Kit consisting of high and low density lipoprotein cholesterol in a base of human albumin for calibration or verification of medical diagnostic test systems