Now we can also have secretion taking place. Certain substances that end up traveling into the Eve farin arterial and then into the peritubular capillaries can actually be secreted back into our filtrate and eventually ends up in our urine that is released by our body. So we see that there are actually only two ways by which a given substance can actually end up being in the filter. It and eventually ends up in our urine and is released by our body. And these two methods are as follows. Number one, that substance can be filtered through our glomerulus and then not reabsorbed by our tubules.