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.
Green urine is urine that is green in color, though it also may be greenish-brown or greenish-yellow, and it may be cloudy or clear. A change in urine color may be temporary, or it may be persistent. The duration and course of green urine can vary widely, depending on the cause. There are several possible causes of green urine. Urinary tract infection is the most common, and the urine may appear darkened or cloudy. It may not appear green or may take on a greenish tinge. True green urine is rare and most commonly results from dyes or food colorings or from certain medications.