HCG levels, does that seem normal?

Patient: My HCG count was 18000 on 2.19 and 28000 on 2.21. (5wks 3days and 5wks 5 days)How does that sound?

Symptoms: Pregnancy

Doctor: Hello,Thanks for the query.There is a more than 66 % increase in the value of beta hCG in 48 hrs which is good an d shows foetal viability and that the initial growth at present is adequate and the pregnancy is evolving correctly.Hope this helps.Regards