Phosphate

Most of the phosphate in our bodies is stored within bone

Phosphate from food is absorbed from the gut and excreted in the urine (under the control of PTH which inhibits its reabsorption in the renal tubules - PTH Pee PO4!)

Plasma phosphate = 0.8-1.6 mmol/l

Phosphate is a very important molecule being involved in energy production (ATP), oxygen delivery (2,3 DPG), structural (cell membranes and bone), genetics (DNA) and as a buffer.

Disturbances in phosphate homeostasis may lead to

About 80% of filtered load of PO4 is reabsorbed in the proximal convoluted tubule under the control of PTH