What is the causes of quantiferol

What are the causes of quantiferol ?
quantiferol is a medical test for tuberculosis (TB) infection , and its used to diagnose this condition , and its positive if you are infected 
what causes tuberculosis (TB) ?
tuberculosis is an infection which can be caused by many conditions , but it mainly infect your respiratory system , and what leads to it are :
- being close to infected people 
- weak immune system 
- direct contact to the disease 
what are the treatment options of tuberculosis (TB) ?
- first you have to consult internal medicine doctor to get diagnosed and then doctor will start treatment , and the treatment is 4 medciations course for 6 - 9 months duration , and those medications are :
1. Ethambutol
2. Pyrazinamide
3. Isoniazid
4. Rifampin