Covid -D Dimer is very High. As well?

D Dimer came out very high : 2780 ng/ml and Doc suggested to take  cleaxane 60 ss (twice for 5 days). RBC ,CRP reports are normal (attached). Should I go for another round of test to confirm ? Should I get the CT scans done ? Is there any underlying problem as well? I'm very worried after reading about materials on d dimer test results . My wife is undergoing Covid treatment since 11 April no breathing problem no coughing . Had intialy continous fever between 100-101 range for 5 days in every 8hr and sore throat.  She is now just left with only minor cold symptoms. Her SpO2 is 98 and BPM is 90-105 consistently since day 1. Rapid test is -ve , rtpcr is unavailable at the moment .