First Trimester Tests During Pregnancy






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The first trimester of pregnancy is a very exciting and stressful time. It’s full of lots of appointments, tests and planning, but it’s a very happy time. Read on for a rundown of the most common tests during the first trimester of pregnancy.


1. Blood Tests

One of the very first tests that will be done during the first trimester is probably a complete blood count. This test will check your white and red blood counts as well as tell your doctor how much hemoglobin is in your blood.


That will give him or her an idea about whether or not you are at risk of developing anemia. Your doctor will also be able to find out what your blood type is, and determine whether or not you need a Rh immune globulin shot.

You will need this shot if the test shows that your blood type is RH negative. The doctor will also test you to see if you are immune to Rubella (also known as German Measles).


During pregnancy, the rubella virus can cause a miscarriage, preterm birth, or stillbirth, as well as a variety of serious birth defects, depending on how far along you are when you contract the virus. It is very important to know your immunity levels to Rubella while you are pregnant.

2. Urine Tests

You will also be asked to give a urine sample at each doctor’s appointment, starting with your first appointment. This urine sample will be used to check your HCG levels to confirm your pregnancy. Your doctor will also be able to make sure that you don’t have a kidney infection by testing your urine.urine-sample-will-be-used-to-check-your-HCG-levels

At each subsequent visit, your doctor will use the urine samples to look for signs of gestational diabetes and gestational hypertension as well. Some doctors also use the urine to test for the presence of drugs in the mother’s system in order to protect the baby.


3. Ultrasound Tests

Usually at the first appointment, your doctor might want to use a transvaginal ultrasound to check your baby and see how far along you are in your pregnancy. Many doctors like to do an ultrasound around 6-9 weeks, but others prefer to wait until the second trimester, barring any bleeding or other complications.


If you are having spotting, don’t know when your last period was, or having other complications, your doctor might order an ultrasound early in your first trimester to help check things out. Ultrasound tests all depend on the preference of the doctor, so ask to see what your doctor likes to do.

4. Other Tests

These are just a few of the most common tests that are done during the first trimester. There are many other tests that can be done as well, depending on your age, race, family history, risk factors, etc. Each doctor is different and will have different tests that they like to do. If you have questions about what tests your doctor will be doing, just ask him or her to find out.

Dr. Lynette Weiss is ConceiveEasy's Senior Physician and Scientific Director. She is certified in Obstetrics and Gynecology by the American Board of Obstetrics and Gynecology and is a fellow of the American College of Obstetrics and Gynecology.