Do you find it hard to concentrate during the day or sleep at night? These symptoms could have one thing in common.

Symptoms of irritability, depression, and weight gain in both men and women could be linked to a single source. That's according to breast cancer researcher and biochemist Dr. David Zava from ZRT Labratory.

ZRT Laboratory is an independently owned and operated CLIA (Clinical Laboratory Improvement Amendments) certified hormone testing facility. Founded in 1998 by biochemist and breast cancer researcher, David T. Zava, Ph.D., ZRT Laboratory is committed to delivering convenient, minimally-invasive saliva and blood spot testing services. Using cutting edge technology, ZRT Laboratory test products help to identify preventable hormone imbalances. ZRT Laboratory’s comprehensive test report provides information to help monitor hormone usage and restore hormonal balance. ZRT Laboratory provides hormone testing services worldwide via partnerships with over 9000 healthcare providers. Consumers may also order test kits online directly from ZRT Laboratory. (Some restrictions may apply).

ZRT Labratory is located at  8605 SW Creekside Pl. in Beaverton, OR.

You can reach them at 503-466-2445

Or call their 24-hour Hormone Hotline at 503-466-9166

You can also visit their website.