Length can be adjusted from 37.5 to 46.5 inches. The player changes the length using a PING adjustment tool that threads into a locking ring on the shaft. Turning the tool loosens the ring, allowing the shaft to slide telescopically. The player then adjusts the shaft to the desired length.
A PT and INR are ordered on a regular basis when a person is taking the anticoagulant drug warfarin to ensure that the prescription is working properly and that the PT/INR is appropriately prolonged. There is no set frequency for doing the test.
Why do we monitor the INR? We regularly monitor the INR of people using warfarin in order to balance the risk of excessive bleeding (when the INR is too high, meaning that the blood is too thin) against the risk of clotting or thrombosis (when the INR is too low or the blood is too thick).