General Information
Most vitamin deficient diets use vitamin-free test casein (VFT casein) as the protein source. VFT casein is casein that has been extracted with alcohol to reduce the fat content from about 1% to 0.1%. In the process the level of a number of vitamins (present at low or trace levels in casein) is further reduced, making this an ideal protein source for these types of diets. Harlan Teklad produces our own VFT in-house, and we also offer this as an ingredient for those mixing their own diets. For vitamin deficient diets, vitamins are added singly instead of from a premix.

From this vitamin deficient base, various levels of vitamins can be added back. Many formulas adjust multiple vitamins, and other nutrients.

If use of an intact protein source is not advisable, an amino acid defined diet can be used.

Formula Examples:
TD.86143      Vitamin A Deficient Diet
TD.89123      Vitamin D Deficient Diet
TD.88163      Vitamin E Deficient Diet
TD.95247      Folic Acid Deficient Diet

Contact Technical Services for other formula examples or to discuss your specific needs.