A test point adaptor for coaxial cables includes a main body, a test body, and a cap. The main body has a first longitudinal axis and includes a first end comprising a first interface, a second end comprising a second interface, and a first center conductor extending at least from the first interface to the second interface. The test body has a second longitudinal axis arranged transversely to the main body and includes an outer conductive sleeve, a test body end comprising a third interface, an electrically conductive contact member in electrical contact with the first center conductor, and a gripping arrangement electrically coupled with the electrically conductive contact member. The third interface includes a conical contact surface of the outer conductive sleeve. The cap includes a sleeve configured to matingly engage an outer surface of the outer conductive sleeve. The outer conductive sleeve includes a conical contact surface configured to engage the conical contact surface of the outer conductive sleeve when the cap is matingly engaged with the outer sleeve. The cap includes a terminator configured to be aligned with and received by the gripping arrangement, which electrically couples the terminator to the electrically conductive contact member.