My dad used to have severe pain in his heart after every physical activity, even a walk for 10-20 seconds. After investigation we got to know that his hemoglobin is 4.4 mg/dl.. and after 3 blood infusions along with medication which included iron capsules till around 15 days back, it went upto 8.2 g/dl and later on after 3 days it went even further to 8.6 g/dl and now in the report it is 7.2 g/dl. Doctors said it can be anemia, and later after few days they also added that he has his kidney damaged. Please have a look at the blood and urine tests and throw some light over the issue. Thank you.