US Drug Testing Laboratories Inc (USDTL) is organized around development of objective biomarker assays for effective use as alternative specimens in the analysis of substances of abuse. The firm has specialist expertise in newborn toxicology, alcohol biomarkers and substances of abuse testing with an emphasis niche areas of forensic drug and alcohol testing. The firm can provide testing of umbilical cord, fingernail/hair, meconium, and PEth (an abnormal phospholipid formed in red blood cells following alcohol exposure). With NIH funding and in partnership with other researchers, the firm has enabled advancements in biomarkers as objective measures. Th eefforts has also been to push the barriers on traditional tests too, offering various panel urine assays and the ability to test for ambiguous substances like tramadol, zolpidem, bath salts and synthetic cannabinoids.