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.
The terahertz, abbreviated THz, is a unit of electromagnetic (EM) wave frequency equal to one trillion hertz (10-to-the-12th power Hz). The terahertz is used as an indicator of the frequency of inf...