2026
The tests to expect during pregnancy
Category (s):
Pregnancy
Welcome
Pregnancy follow-up takes each woman's obstetrical history into account. Since every pregnancy is unique, recommendations and exams are adapted to previous experiences, which can influence the choice or the timing of tests. Although many exams are common to most follow-ups, their frequency or their nature can vary from one woman to another.
Blood tests are among the first exams of pregnancy follow-up. They are used to confirm the pregnancy, assess certain health indicators (such as iron levels) and check immunity against infections that could harm the development of the fetus. These analyses are essential in order to detect certain conditions early and ensure prompt care.
Between the 7th and the 11th week, a first visit marks the beginning of pregnancy follow-up. During this exam, a health professional can perform an HPV test to screen for cervical cancer and STBBI screening. These tests are preventive, since certain infections can harm the development of the fetus or affect how the pregnancy unfolds.
Right from the start of follow-up, blood tests may be offered to assess the risk of certain genetic abnormalities. In particular, they can screen for:
Several types of tests exist, with varying levels of accuracy. Cell-free fetal DNA analysis, available as early as the 10th week, offers a more specific assessment, but NIPT is not yet routinely offered in the public system.
In some cases, diagnostic exams such as amniocentesis or chorionic villus sampling may be offered at different points in the pregnancy, depending on the medical situation.
Ultrasounds may be offered as early as the first trimester, in particular to:
After that, other ultrasounds may be recommended to:
Since every pregnancy is unique, the number and type of ultrasounds vary according to medical needs.
In the second trimester, an ultrasound is generally offered around the 20th week to assess the baby's morphology; it is offered to all pregnant women in the public system.
Around 28 weeks, a gestational diabetes screening test (oral glucose tolerance test) may be recommended to detect an abnormal rise in blood sugar, sometimes without any symptoms. It can be done earlier if risk factors are present.
Around 36 weeks, group B streptococcus screening is done with a vaginal and anal swab. If the woman is an asymptomatic carrier, preventive treatment with intravenous antibiotics will be given during labour to reduce the risk of transmission to the newborn.
Since every pregnancy is unique, follow-up makes it possible to adapt care to the specific needs of the mother and the baby.
The prenato.ca website and the comprehensive information it contains are intended as practical tools for expectant and new parents, as well as for women throughout the various stages of their lives. This information is not intended to replace the skills, knowledge, or experience of qualified healthcare professionals who are familiar with the specific facts, circumstances, and symptoms of each individual. Consequently, Prenato and its staff cannot be held liable for any adverse effects or consequences resulting from the use of the information provided on this site. It is the user's responsibility to consult a physician or a qualified healthcare professional appropriate to their specific needs for any personal health concerns.
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