To batch rename incrementally. Select a group of items, and then, on the Action menu, click Batch Rename. On the Rename Options menu, select Date. This command automatically inserts the IPTC Date Created, the EXIF Capture Date, or the file Creation Date, in that order.
However, PTH can change due to renal function, exercise level, the time of day, or even diet. There has been no consensus on the optimal level of vitamin D intake to reduce PTH, and this is why many laboratories report the normal range of vitamin D to be so wide (20 to 40 ng/ml, or in some cases, 50 to 100 nmol).
Look in a different section of the bloodwork for the Vitamin D test. It is wise to always ask for a copy of your blood tests so that you can see the answer to the question you are asking here. My blood test statement shows that my vitamin D 25-OH total is 16 and the the other column states that is L for low. The reason your Vitamin D levels are in your blood test resurlts is as follows. The reference range which is what it should be is 20.