Tetracycline Screened FBS is designed for researchers using tetracycline-regulated gene expression systems in cultured cells. These systems rely on the presence or absence of tetracycline in growth medium to either turn off or turn on gene expression. The presence of tetracycline in the serum may interfere with such systems. To eliminate the possibility of interference, we measure the tetracycline content of several high quality Defined FBS lots using an ELISA system. Those lots with undetectable tetracycline levels are selected as Tetracycline Screened FBS. Further heat inactivation or irradiation processing can be done upon request.

Assays (subject to change without notice): Progesterone, Selenium, Insulin, IgG, Sodium, Cholesterol, Potassium, High Density Lipo-Protein Cholesterol, Calcium, Low Density Lipo-Protein Cholesterol, Chloride, Triglycerides, Magnesium, Gamma Globulin, Glucose, Phospholipids, Copper, Alkaline Phosphatase, Total Iron Binding Capacity (TIBC), Lactate Dehydrogenase, Percent Saturation, Glutamic Pyruvic Transaminase (SGPT), Glutamic Oxaloacetic Transaminase (SGOT), Thiamine (B1), Riboflavin (B2), Pyridoxine (B6), Nicotinic Acid (Niacin), Vitamin H (Biotin), Vitamin A (Retinol), Carotene, Total Vitamin E (Tocopherol), Cyanocobalamine (B12), Pteroylglutamic Acid (Folate), Vitamin C, 1,25 Dihydroxy Vitamin D, pH, Total Protein, Albumin, Blood Urea Nitrogen, Creatinine, Total Bilirubin, Inorganic Phosphorus, Osmolality, and Iron.