If your doctor suspects that you have kidney disease, the test for albumin will be repeated. Three positive results over three months or more is a sign of kidney disease. You will also be given a simple blood test to estimate GFR. GFR stands for glomerular filtration rate.
Limestone Facts. Limestone is a sedimentary rock that contains at least 50% calcium carbonate (CaCO3). Because sedimentary rocks are made of various types of sediments, the other 50% of a limestone rock could be virtually any other mineral.
Limestone is sedimentary, of course, but gravel could be made from granite, marble, or sandstone, none of which may be of much use as construction material, but all are often used in decorative settings. bernardo62 Â· 8 years ago. Thumbs up. 2.