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).
Everyone agrees that anyone with a 25-hydroxyvitamin D level of less than 15 ng/mL or 37.5 nmol/L (depending on the units reported by a lab) needs more vitamin D. The U.S. National Institutes of Health notes that 25-OHD levels over 30 ng/mL are optimal, and that there is insufficient data to support recommendations for higher levels. The Vitamin D Council considers the ideal 25-OHD level to be between 40 ng/mL and 70 ng/mL.