A homogeneous immunoassay method and system for quantitative determination of total immunoglobulin E and specific antibody levels to a plurality of allergens, in which a relatively small sampling of blood is required. The first portion has a first length traverse to the pivot axis, and the second portion has a second length extending in the same direction as the first length. For each smaller range, the reader may then poll the tags to determine which tags have tag values that fall within the smaller range. The boundaries of the spatial volume are defined by a periphery of the at least one metal coil. A modulator coupled to the tunable laser for receiving the new signal and forming a modulated signal. The number of landings of an aircraft is often used as a determinant for such as lifetime warranties for brake discs and recommended maintenance periods.