Recumbant: <375 pmol/L (This relies on the patient lying down for at least 4 hours). Standing: <750 pmol/L
For paediatric ranges (from http://hyper.ahajournals.org/content/56/3/391.full)
95th Percentile = 491 pmol/L
5th Percentile = 69 pmol/L
Please note change in reference range from 01/03/2018:
Standing <750pmol/L (provided by referral lab)