What Does This Creatinine Count From Blood Test Result Indicate?

Hi,My husband is of 30 years and we have recently had his blood test. His creatinine count is 3.2,Can we bring this creatinine count to normal? Is it curable? Can this lead to something serious? What is his kidney status with this creatinine count? What precautions should he take? What foods should he have and what foods should he avoid? Will a dietician be good for him?