Rapid Antigen Detection Test
- Rapid Antigen (Point-of-care) test:
- If Positive: Report as true positive.
- If Neagtive:
- If asymptomatic: Report as negative.
- If symptomatic: go for RT-PCR
- Specificity ranged from 99.3 to 100%
- Sensitivity ranged from 50% to 80%
Antibody Rapid Test
- Covid-19 total Antibody Test (qualitative)
- Covid-19 IgG Antibody (quantitative)
Molecular based Test (RT-PCR/TruNat/CBNAAT)
RT-PCR CT (cycle threshold) value (>24 less infectious. <24 more infectious)
Other tests
- CBC, Absolute Lymphocyte count, KFT, LFT.
- CRP, D-Dimer, Ferritin, LDH,
- IL-6
- Troponin-I
- Procalcitonin
- CXR
- ECG
- CT-Chest (Peripheral lesions, Ground Glass Haziness, Consolidation patches, Reverse Halosign, Vaculation sign, Air Bronchograms, Prominent Pulmonary Vessels, Crazy Pavement Patterns) on CT-SCAN all go in favour of Corona. CT- features can clinch the diagnosis even if RT-PCR was negative on 4 consecutive times.
- Note: Clinical Features, Serum Markers and CT scan of Chest are much better diagnostic tools than depending on PCR test