Hello My father was having covid and lung infection and was admitted for 15 days in hospital and treated well ..at the time of discharge d diamer level was 3.6 as it should be 0.5 and all medicines and blood thinner was prescribed after 15 days of home stay now blood test was conducted d diamer level comes 4.4 and crp level is normal and ldh level is normal and oxygen saturation is normal..now body is less weak as compared to discharge time..but why d diamer little bit fluctuate as still blood thinner is continuing.plz tell