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.
Minimum Wage History. A federal minimum wage was first set in 1938. The graph shows nominal (blue diamonds) and real (red squares) minimum wage values. Nominal values range from $0.25/hr in 1938 to the current $7.25/hr. The graph adjusts these wages to 2015 dollars (red squares) to show the real value of the minimum wage.