(February 26, 2019, 1:44 PM EST) -- ALEXANDRIA, Va. — Various claims of a Quest Diagnostics Investments LLC patent covering a method of determining the amount of testosterone from a sample via mass spectrometry should be canceled, a competitor asserts in a Feb. 25 petition for inter partes review (Laboratory Corporation of America Holdings v. Quest Diagnostics Investments LLC, No. IPR2019-00738, PTAB)....