Infant Active Coagulation Profile (Preductal Blood)

Why This Test Is Done

Your healthcare provider may order this test if your infant is undergoing surgery, has a history of bleeding or clotting issues, requires monitoring in the neonatal intensive care unit (NICU), or if symptoms like bruising, bleeding gums, or excessive bleeding occur. Preductal blood is taken from an artery (e.g., radial or umbilical artery) to get more accurate measurements of clotting factors compared to venous blood.

What to Expect Before the Test

No special preparation is needed. The test involves a small needle inserted into an artery in your baby’s foot, heel, or umbilical cord (if applicable). The blood sample is collected and sent to the lab for analysis. The process is quick but may cause brief discomfort. Your baby may need to stay still during the procedure.

What the Test Measures

This profile typically includes tests for key clotting factors such as prothrombin time (PT), activated partial thromboplastin time (aPTT), and sometimes fibrinogen levels. These tests help evaluate how well your baby’s blood can form clots and identify potential deficiencies or dysfunctions.

How Results Are Interpreted

Results are compared to standard ranges for infants of the same age and health status. Abnormal results may indicate bleeding disorders (e.g., hemophilia), liver disease, or other conditions affecting clotting. Your healthcare provider will discuss findings with you and may recommend further testing or treatments if needed.