I am 30 years weight 60kg height 5 foot 6 inch I suffer from muscles stiffness muscles cramp tingling and feel weakness in leg and facing problem in up and down movement and also have emotional imbalance problems memory weakness and difficult in learning and nervous system weak specially in mind I want to do some test as calcium level, serotonin level, vitamin d level. Is this right test if not, please suggest right test to reach to confirm disease and also have problem in concentration.