Pregnancy tests are based on the detection of the pregnancy hormone hCG, whether performed in blood or urine. However, there is one main difference between the two: blood tests are generally quantitative, i.e. they provide a value for the amount of hormone detected, whereas urine tests are qualitative and only determine the presence or absence of the hCG hormone.
In addition, blood pregnancy tests are more sensitive, so they have the ability to detect smaller amounts of hormone than urine tests.
Read the full article on: Gonadotropins: What are they and what are their functions? ( 40).
By Laura García de Miguel M.D., M.Sc. (gynecologist), Mónica Aura Masip M.D., M.Sc. (gynecologist), Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist), Xinxin Lin MD (gynecologist) and Cristina Algarra Goosman B.Sc., M.Sc. (psychologist).
Last Update: 01/31/2022