The detection of feigned weakness in hand-grip strength assessment is difficult. We review several proposed methods and their weaknesses. A comparison of unilateral testing and simultaneous bilateral testing with the Jamar™ dynamometer and the Baseline™ pinch gauge is demonstrated as a solution. An experiment employed 100 asymptomatic subjects tested twice, once under instructions to give a full effort and once under instructions to feign weakness. Seven statistical criteria of noncompliance were chosen. Defining noncompliance as failing two or more of the seven criteria, 99% of the instructed-noncompliant subjects were correctly classified as noncompliant. No subjects were incorrectly classified as noncompliant during instructed compliant testing. Twelve subjects failed a single criterion. On retesting, all but one were correctly classified. One subject in the instructed-noncompliant group passed all criteria. Including retesting of the 12 "grey-zone" subjects, accuracy was 99.5%.