Quick Answer. Low glomerular filtration rates (GFR) are caused by chronic kidney diseases according to MedicinePlus. The GFR is a measure of the amount of blood that passes through the glomeruli, which are tiny filters in the kidneys responsible for removing waste, in a single minute. To determine the GFR, blood tests are required.
1 For work performed from July 24, 2007 to July 23, 2008, the Federal minimum wage is $5.85 per hour. 2  For work performed from July 24, 2008 to July 23, 2009, the Federal minimum wage is $6.55 per hour. 3  For work performed on or after July 24, 2009, the Federal minimum wage is $7.25 per hour.
Federal Minimum. The federal minimum wage is $7.50 per hour as of 2015. Based on a 40-hour work week, this works out to an annual salary of $15,600. As of 2015 this would mean that a single filer would be paying 10 percent federal income tax on the first $9,075 and 15 percent on the remaining $6,525.