In the event that you have side effects of nutrient D insufficiency like bone mutation in youngsters (rickets), bone shortcoming, or breaks in grown-ups (osteomalacia)
In the event that you have hazard factors for nutrient D lack like mature age, restricted sun presentation, heftiness, or you have gone through gastric detour medical procedure
On the off chance that you have manifestations of pallor like shortcoming, sleepiness, fair skin (insufficiency of B12), or folic corrosive inadequacy