The present document specifies a general method used to derive Test Tolerances for UE radio reception conformance tests in TS 36.521-1, and establishes a system for relating the Test Tolerances to the measurement uncertainties of the Test System. The test cases which have been analysed to determine Test Tolerances are included as .zip files. The present document is applicable from Release 10 up to the release indicated on the front page of the present Terminal conformance specifications.