Visitors of all ages arriving in Canada by air require a passport or passport equivalent, such as a NEXUS card. If you need a passport right away, get a passport within 24 hrs with Rushmypassport.com.
OTC means Over the Counter, which is a test that you can buy at the store and do not need a prescription for. Many medication are called OTC which means you can just go by them without a doctor's prescription. Or it could also be an OTC stock trade.
A wbc test is the test that is conducted to check the number or concentration of white blood cells in the blood that is being analyzed. If the wbc blood test results show a high level of wbc then it is inferred that the person is suffering from an illness, an allergy or an inappropriate auto immune response.