Which of the following is true regarding the effectiveness of thiazides in relation to glomerulofiltration rate (GFR)?
Thiazides are ineffective if GFR is more than 50 ml/min
Thiazides are not dependent on GFR
Thiazides are ineffective in GFR is less than 15-20 ml/min
Thiazides and GFR are directly correlated in terms of effectiveness.