A small number of RBCs are normally present in urine and usually result in a negative chemical test. An increased amount of hemoglobin and/or increased number of RBCs are detected as a positive chemical test result.
gigahertz. n, pl-hertz. 1. (Units) a unit of frequency equal to 10 9 hertz. Symbol: GHz.
hertz. A unit used to measure the frequency of vibrations and waves. One hertz is equal to one cycle per second.Radio waves are usually measured in megahertz, or millions of hertz.ertz. n. pl. hertz Abbr. Hz. A unit of frequency equal to one cycle per second. See Table at measurement.