A folic acid test measures the level of folate, a type of B vitamin, in your blood. Folate is crucial for the production of DNA, red blood cells, and for the proper development of a baby during pregnancy. Low levels of folic acid can lead to serious health issues such as anemia, which causes fatigue and weakness, and birth defects in pregnant women, like neural tube defects. Additionally, folate deficiency can affect your mood and cognitive function. Taking a folic acid test helps you detect deficiencies early, allowing you to take corrective measures to maintain good health, support proper pregnancy development, and prevent potential complications.