Ciprofloxacin and Levaquin (Levofloxacin) are in the same drug class (fluroquinolones). It makes sense that you would be allergic to both. You probably are allergic to other drugs in the same class such as moxifloxacinI, Ofloxacin, etc.s a fluoroquinolone, it is in the same class of agents as ciprofloxacin, enoxacin, levofloxacin, lomefloxacin, norfloxacin, and ofloxacin. Nalidixic acid is also a quinolone drug.
STC is calculated by taking the Transmission Loss (TL) values tested at 16 standard frequencies over the range of 125 Hz to 4000 Hz and plotted on a graph. Your curve (what you actually measured) is compared to standard STC reference curves (see appendix).
An STC rating is an instrument measurement of how much noise is stopped. The STC ratings allow accurate âapple to appleâ comparisons. The STC rating is the average amount of noise stopped at 18 different frequencies, measured in decibels.STC ratings are a logarithmic scale similar to the earthquake Richter Scale, which means each number is significantly higher than the one before.n STC rating is an instrument measurement of how much noise is stopped. The STC ratings allow accurate âapple to appleâ comparisons. The STC rating is the average amount of noise stopped at 18 different frequencies, measured in decibels.