bhCG Blood Testing  The beta subunit of human chorionic
gonadotropin, abbreviated as bhCG, is the hormone that urine and
blood pregnancy tests detect. Generally, lab values above 5ng/ml
are considered positive. Some facilities may have different
standards for what is considered a positive test, though. It is
important to know, however, that just because a test is
positive, it doesn't mean that the pregnancy will be good. For
example, a bhCG level of 6.0 is considered to be a positive
pregnancy test. But the level is so low that a good pregnancy is
not likely.  Repeating the bhCG Testing  The doctor will likely
ask you to repeat the testing every two to three days. This way
the doctor can see how the bhCG level is moving. The number
should double in two to three days to reassure the doctor that
the pregnancy is progressing normally. If the level is not
rising robustly, the prognosis for the pregnancy isn't great.
Additionally, the bhCG testing can give the doctor an early
indication of a possible ectopic pregn