Positive relation of vitamin D and parathyroid hormone is declared in study23 and same observation was found by others.24 In Finish study it was concluded that, vitamin D level of <40 nmol/l responsible for the elevation of parathyroid level.25 A study of clinical rickets highlighted that parathyroid hormone level is significantly increased from upper limits in vitamin D deficiency cases.26 Abnormal biochemical finding in sub clinical cases of this study might be due to lack of synergistic effect of sunshine and vitamin D. This evidence concerns the gene PTH and rickets.