ZRT LABORATORIES
ZRT is one of the first labs to measure salivary hormone levels and helped make salivary hormone testing commercially viable for health care providers and patients around the world. ZRT also developed the science for accurately measuring hormones and other analytes in dried blood spots and is currently one of only a few labs to offer this method commercially. Dr. Varveris has been so impressed by high-quality ZRT’s service as well as the accuracy of their test results that he uses ZRT as his sole speciality lab provider for measuring salivary hormones and dried blood spot analytes.