I 'm approx 6 weeks. hcg 1812 2days ago & 2724 today (52 hrs later). doubling time about 68 hrs. mean anything? no ultrasound for 10days. thank you!

Difficult to say: It usually requires 3 values to fully determine a pattern. Since 10 days a hve passed a repeat ultrasound may be helful. Please discuss this with your ob. The values need to rise at least 60% in 48 hours. It does not need to precisely double in that time.

Biologic variation: Not many women get pregnant at the age of 52, so the usual test results and hormonal changes may not be entirely applicable to you. Wish you good health and a healthy baby!