Individual tests

The aPTT is one of several blood coagulation tests. It measures how long it takes your blood to form a clot. When one of your blood vessels is damaged, proteins called clotting factors come together to form clots and quickly stop the bleeding. The aPTT test helps assess how well those clotting factors work, often in conjunction with other tests that monitor clotting factors.
A blood smear is a sample spread on a glass slide and treated with a special stain. Previously, all blood smears were examined under a microscope by laboratory professionals. Now automated digital systems can help examine blood smears. A blood smear helps diagnose and monitor conditions such as blood disorders, sudden kidney failure, and certain cancer treatments.
A blood type can be classified into four common groups known as the ABO system: A, B, AB, or O. A second system, the Rh system, determines if the blood type is Rh-positive or -negative. Blood typing is a common test before blood transfusions, tissue transplants, and during pregnancy.
Chlamydia is a common STD among both men and women. It can damage a woman’s reproductive system, making it difficult or impossible to get pregnant. Chlamydia can also cause a pregnancy to occur outside the womb or the infection to pass to your baby during delivery, causing an eye infection or pneumonia in your newborn. You should receive testing for chlamydia at your first prenatal visit. A positive result of Chlamydia trachomatis IgG indicates past, current, or chronic infection, while positive IgM antibodies indicate recent infection.
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