<prompt> At what value of one hour glucose challenge test will you recommend a standard glucose tolerance test-120 mgdl140 mgdl150 mgdl160 mgdl  <response>: Answer is option 2 - 140 mgdl A serum blood glucose value greater than 140mgdl at one hour in an one hour glucose challenge test O; Sullivan test is termed suspicious and requires a formalstandard glucose tolerance test. Done to detect gestational diabetes Ref manual for laboratory and diagnostic test 8350 