Methotrexate is best suited when b-hCG concentration is:: (A) <5000 IU, (B) <6000 IU, (C) <7000 IU, (D) <10,000 IU
Answer is A. Ans. is a, i.e. < 5000 IU.(Ref. Williams Obs 25/e pg 378)Failure rate of methotrexate is 3.8%. If b-hCG levels are < 5000 IU but rise to 14% if levels are between 5000-10,000.