A new study carried out using existing laboratory test data shows that people who had a positive PCR test for Covid-19 but a negative serology test, meaning that they did not produce detectable antibodies, still had a significant amount of protection from reinfection.
Complement C4
| Category | Immunology and PRU |
|---|---|
| Reporting frequency | 5 days |
Additional information
May predict lupus nephritis.
Reference range: 0.14 to 0.54 g/L
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