ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,222,354, issued on Feb. 11, was assigned to Quest Diagnostics Investments LLC (Secaucus, N.J.).

"Identification and quantitation of insulin-like growth factor-I variants by mass spectrometry" was invented by Ievgen Motorykin (Carlsbad, Calif.), Nigel Clarke (San Clemente, Calif.), Michael J. McPhaul (Capistrano Beach, Calif.) and Zengru Wu (Ladera Ranch, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods are provided for detecting insulin-like growth factor-I (IGF-I) variant(s) in a sample. Methods provided herein are further directed to using the detected ion or ions to determine the presence of IGF1 variant(s) in the sample."

The patent wa...