Creatinine levels relate to both muscle mass and to kidney function. As you age, your muscle mass decreases but your kidneys tend to function less effectively. The net result is not much change in creatinine levels in the blood as you get older.
As a result, California employers are required by law to have workers' compensation insurance, even if they have only one employee. And, if your employees get hurt or sick because of work, you are required to pay for workers' compensation benefits.
The first set of payments that you are entitled to receive is payment for your medical care. Under California law, the DWC provides that an injured worker will receive all medical treatment necessary to cure or relieve the effects of the injury, with no deductible or out-of-pocket cost to the employee.