There are no specific guidelines for PTH levels after PTX, but Kidney Disease Improving Global Outcomes (KDIGO) and Kidney Disease Outcomes Quality Initiative (KDOQI) guidelines suggest PTH levels of 2 to 9 times times the upper normal limit for the assay, or in the range of 15–30 pmol/l in patients on dialysis, treated medically15,16. The gene discussed is PTH; the disease is kidney disorder.