Effective April 1, 2011, code G0431QW is deleted from the Clinical Laboratory Fee Schedule (CLFS). Code G0431 describes a high complexity test, and should not be reported with a QW modifier; the QW modifier indicates a Clinical Laboratory Improvement Amendments (CLIA) waived test.
If this occurs with insemination or intercourse that is timed correctly, the egg may become fertilized. It is important to remember, however, that the hCG within the trigger shot will stay in your urine for 7 to 10 days so you may get a false positive on a home pregnancy test. Because of this, most doctors will wait at least two weeks to give you a blood test designed to test for hCG levels.
After an hCG injection is given, ovulation soon follows. Ovulation usually occurs within 36 hours after an hCG injection is given. Sometimes ovulation will happen as quickly as 24 hours after injection, and it can happen as long as 48 hours after injection. Because there is no exact time frame as to when ovulation will occur, the day of a womanâs injection and the two days following her injection are very important.