Hi. My application is under process. Yes I passed the medical exams very next day of appearing for repeat chest xray. If she is asked for sputum test, she then has to give sputum samples, early in the morning, for 3 consecutive days. After that it would almost take 3 months for the results. Keep checking with them in between as the sputum is used for 3 different tests 1) genexpert 2) smear test 3) Sputum culture
1&2 takes few days and if they are -ve then it would be highly unlikely that sputum culture would be +ve.
Usually after 3 months of sputum samples, the applicant is asked to appear for repeat chest xray. My repeat xray was still problematic but sputum tests were -ve therefore they pass my medical.
Hope this helps.