A data protective system for voice-band telecom test sets is disclosed. The coated articles include a ceramic matrix composite substrate. Each queue has at least one processing function and zero or more clusters associated with it. In one embodiment the collection slide and device can be used to detect the presence of fecal occult blood in a stool sample. The control circuits correspond to the flip-flops, and a first stage control circuit receives the shift clock signal and a start pulse and each remaining control circuit receives the shift clock signal and an output signal of a corresponding flip-flop.