One possible approach would be to use a relative change in creatinine (e.g. threefold) as the primary criterion, with an absolute cutoff (e.g. 4 mg/dL or about 350 mcmol/L) as a secondary criterion when baseline creatinine is abnormal. Similar approaches have been used in the literature (25,26).
The combined sales tax rate for Charleston, SC is 8.5%. This is the total of state, county and city sales tax rates. The South Carolina state sales tax rate is currently 6%. The Berkeley County sales tax rate is 0%. Charleston sales tax rate is 1%.
The South Carolina state sales tax rate is 6%, and the average SC sales tax after local surtaxes is 7.13%. 1  Groceries and prescription drugs are exempt from the South Carolina sales tax. 2  Counties and cities can charge an additional local sales tax of up to 3%, for a maximum possible combined sales tax of 9%.