Class 4 is the highest and most dangerous class of laser, including all lasers that exceed the Class 3B AEL. By definition, a class 4 laser can burn the skin, or cause devastating and permanent eye damage as a result of direct, diffuse or indirect beam viewing.
NeulastaÂ® is a prescription medication used to help reduce the chance of infection due to a low white blood cell count, in people with certain types of cancer (non-myeloid), who receive anti-cancer medicines (chemotherapy) that can cause fever and low blood cell count.
If they find that your counts are low, one of the things which your oncologists may do is prescribe a dose of Neupogen (figrastim). I have always been confused between Neupogen and another drug which does essentially the same thing, Neulasta (pegfilgrastim). I finally asked what the difference was.