25-Hydroxy Vitamin D

The 25-Hydroxy Vitamin D test measures the level of vitamin D in your body, the form doctors rely on to judge your overall status. Vitamin D is needed for strong bones, healthy muscles and a well functioning immune system.

Low results are common, particularly with limited sun exposure, and may help explain symptoms such as tiredness, low mood or bone and muscle aches. Checking your level can guide whether a supplement is needed, and it is easily monitored over time.