Dr Marina Klokke on what causes false negative COVID-19 tests SABC NEWS AND CURRENT AFFAIRS | SABC DIGITAL NEWS Download 1.4 MB High quality — 2.7 MB Medium quality — 1.1 MB Low quality — 671.5 KB What's the difference? Cape Town Specialist Family Physician, Dr Marina Klokke says the false negative COVID-19 test rate is about 30%. ENGLISH South Africa News · Society & Culture