First realize the term Ivy League refers to a very specific set of 8 schools: Harvard, Princeton, Yale, Columbia, Penn, Cornell, Dartmouth, and Brown. These are all private schools, with the exception of Cornell which has both private and public components.
As you can see, after an abortion the hCG levels remain up for as long as 60 days. Following an abortion a positive pregnancy test may occur for as long as 60 days post abortion when the termination procedure was successful. The following two paragraphs come from the 19the edition of Contraceptive Technology.
About 25% of pregnant women will test positive with the early home pregnancy test about 2 days before a missed period, and about 40% the day before the missed period. The wide variation of when the urine pregnancy test becomes positive and how early pregnancy can be detected are due to four variables which determine when the home urine pregnancy test becomes positive: