A hand-held test meter for use with an analytical test strip in the determination of an analyte in a bodily fluid sample, the hand-held test meter comprising: a housing; a test meter control circuit block; and an electromagnetic interference detection circuit block that includes: an antenna configured to sense electromagnetic fields of a predetermined frequency; wherein the electromagnetic interference detection circuit block is configured to generate a signal representative of an electromagnetic field sensed by the antenna and to provide the signal to the test meter control circuit block; and wherein the test meter control circuit block is configured to interrupt operations of the hand-held test meter when the signal received from the electromagnetic interference detection circuit block is representative of a predetermined electromagnetic field that interferes with hand-held test meter operation; wherein said predetermined electromagnetic field is an electromagnetic field which has a field strength greater than 10V/m and either: has a frequency in the range of 800MHz to 2200MHz; or is an amplitude modulated Radio Frequency electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal; or is a pulse modulated RF electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal. a housing; a test meter control circuit block; and an electromagnetic interference detection circuit block that includes: an antenna configured to sense electromagnetic fields of a predetermined frequency; wherein the electromagnetic interference detection circuit block is configured to generate a signal representative of an electromagnetic field sensed by the antenna and to provide the signal to the test meter control circuit block; and wherein the test meter control circuit block is configured to interrupt operations of the hand-held test meter when the signal received from the electromagnetic interference detection circuit block is representative of a predetermined electromagnetic field that interferes with hand-held test meter operation; wherein said predetermined electromagnetic field is an electromagnetic field which has a field strength greater than 10V/m and either: has a frequency in the range of 800MHz to 2200MHz; or is an amplitude modulated Radio Frequency electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal; or is a pulse modulated RF electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal. an antenna configured to sense electromagnetic fields of a predetermined frequency; wherein the electromagnetic interference detection circuit block is configured to generate a signal representative of an electromagnetic field sensed by the antenna and to provide the signal to the test meter control circuit block; and wherein the test meter control circuit block is configured to interrupt operations of the hand-held test meter when the signal received from the electromagnetic interference detection circuit block is representative of a predetermined electromagnetic field that interferes with hand-held test meter operation; wherein said predetermined electromagnetic field is an electromagnetic field which has a field strength greater than 10V/m and either: has a frequency in the range of 800MHz to 2200MHz; or is an amplitude modulated Radio Frequency electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal; or is a pulse modulated RF electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal. wherein the electromagnetic interference detection circuit block is configured to generate a signal representative of an electromagnetic field sensed by the antenna and to provide the signal to the test meter control circuit block; and wherein the test meter control circuit block is configured to interrupt operations of the hand-held test meter when the signal received from the electromagnetic interference detection circuit block is representative of a predetermined electromagnetic field that interferes with hand-held test meter operation; has a frequency in the range of 800MHz to 2200MHz; or is an amplitude modulated Radio Frequency electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal; or is a pulse modulated RF electromagnetic field and the signal received from the electromagnetic interference detection circuit block is a demodulated signal.