"Blood Testing"

I took my son into see the Gastroenterologist and Pediatrician on 07/07/14 due to his potential Crohns disease, my son is 5 years old and suffers bad. I was made aware that i have to bring my son in for another blood test, however i cannot bring my son back unit 13/08/14 as the only Pediatric nurse that carries out the blood testing is on holiday and fully booked until then. I would hope that a hospital would have more than one Blood nurse available in the children's ward to test kids. I am extremely disappointed with this service and hope that you look to rectify this situation sooner rather than later.