Test Name: 
                        Vanillylmandelic Acid ( VMA ) - 24H Urine                      
                    Test Code: 
                        P000040                      
                    How to Prepare: 
                        With the doctor's consent and supervision avoid the following list of medications - morphine, ipronazid, chloropromazine,norepinephrine,epinephrine,insulin,reserpine, phenobarbiral and antihypertensives, particularly beta-blockers.