<Tr> <Th> CKD Stage </Th> <Th> GFR level (mL / min / 1.73 m) </Th> </Tr> <Tr> <Td> Stage 1 </Td> <Td> ≥ 90 </Td> </Tr> <Tr> <Td> Stage 2 </Td> <Td> 60--89 </Td> </Tr> <Tr> <Td> Stage 3 </Td> <Td> 30--59 </Td> </Tr>

Which is not a clinical manifestation of chronic kidney disease