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 color results from a pigment called urochrome. The actual tint will depend on the concentration or dilution of the urine. The color of urine may not always be nor â¦ mal; B vitamins, for example, turn urine green, and carrot juice can turn it orange.n fact, this has come from the break down of the better known pigment found in blood, haemoglobin. Basically It's due to excretion of urochrome, a blood pigment. Urochrome is a yellow-colored pigment that gives the color to urine.