An inversion would most likely be a signal that a recession is imminent. An inverted yield curve has a perfect track record of predicting recessions, according to RBC's Jonathan Golub. You can see this in the chart below â the shaded areas are recessions. Business Insider
As pregnancy tests, quantitative blood tests and the most sensitive urine tests usually detect hCG between 6 and 12 days after ovulation. However, it must be taken into account that total hCG levels may vary in a very wide range within the first 4 weeks of gestation, leading to false results during this period.
Pregnancy tests will test for the level of hCG in the body. Urine tests and the qualitative blood test will trigger a positive result when hCG levels are above 25. In this case, there are very few errors in testing as there are few circumstances when hCG is produced by the body.