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.
Generally, frank blue urine discoloration is rare per the presence of urochrome and the high likelihood that the two combined will cause a green urine color. Green urine. Causes of blue urine discoloration can also produce a green urine hue when combined with the yellow color urochrome produces.Additionally, consumption of foods and supplements that contain green pigmentation can also provide the same effect.rown urine discoloration can stem from numerous causes of red urine. Old clot sediment can appear brown when suspended in urine of a certain concentration. Likewise, myoglobinuria and hemoglobinuria often appear brown in color.