Congenital Lactic Acid, Multi-Specimen (Amniotic Fluid, Blood, and Dried Blood Spot), Laboratory-Developed Test

What This Test Measures

Lactic acid (lactate) is a normal byproduct of energy production in your cells. This laboratory-developed test measures lactate levels across more than one specimen type—such as amniotic fluid, blood, and dried blood spots—to give a fuller picture of how the body is handling lactate.

Why Multiple Specimens Are Used

Different specimen types can provide complementary information. Blood lactate reflects the current balance of lactate production and clearance, while other specimens may support evaluation in specific clinical settings such as newborn or prenatal assessment. Using several specimens helps the care team interpret results in context.

What to Expect

Depending on the situation, a blood sample from a vein or heel/finger stick (dried blood spot), and in some cases an amniotic fluid sample, may be collected. Collection is typically quick, though heel or finger sticks may cause brief discomfort.

How Results Are Used

Results are interpreted together with your symptoms, medical history, and other tests. Lactate levels can be affected by many factors, so an abnormal value alone does not confirm a diagnosis; clinicians use the pattern across specimens and the overall clinical picture.