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.
Bright yellow or light green urine may be a sign of excess B vitamins as well. Asparagus has also been known to give urine a green tint. Brown urine can be caused by eating a lot of fava beans or by consuming aloe. It can also be cause for serious concern, though, and indicate liver and kidney disorders.