Which test detect pregnancy earlier among this three serum beta hcg blood test, upt kit test, intra vaginal ultrasound??

Blood level of HCG provide the earliest definitive evidence of pregnancy. The test may be positive even before a missed period. Get HPV vaccine. Wish you good health! Safe sex: https://www.hopkinsmedicine.org/health/wellness-and-prevention/safer-sex-guidelines

The HCG blood test is the most sensitive pregnancy test. It can detect HCG hormone in 6-8 days after implantation. The urine and other tests take longer to detect the release of the HCG hormone. Too much water in urine can dilute the amount of HCG and a false negative is possible. The blood test is the most accurate and fastest test for results.