Heparin anti-Xa may be ordered to monitor some people who have heparin resistance who do not respond as expected to UFH or who have an underlying condition or interfering factor(s) such as lupus anticoagulant (LAC) that affects the PTT test result.he heparin anti-Xa test is not routinely ordered but may be performed whenever a doctor wants to evaluate UFH or LMWH concentrations in the blood.
Green Urine. Green urine is relatively rare, but it does happen. There are a number of reasons why you may one day find yourself urinating green or greenish urine. Some urinary tract infections and problems with bile production can cause green urine, as well as a number of different foods.
Normal urine can range in color from pale yellow (almost colorless) to deep amber. Dark amber urine is usually very concentrated and means that you should be drinking more water. Foods, medications and even vitamins can change the color of urine temporarily but eliminating the cause brings the color back to normal.Most changes in urine color are harmless and the color will go back to normal within a day or two.rine with a bluish tint can mean some type of bacterial infection or may just mean that you have a high level of calcium. If this persists, give your health care professional a call. Brown urine can indicate a potentially serious condition and you should contact your doctor's office for help.