Lactate in Serum/Plasma Measured by High-Performance Liquid Chromatography (2-Hour Postprandial)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like fatigue, dizziness, or unusual sweating after meals, or if you have conditions like diabetes, metabolic disorders, or unexplained low blood sugar (hypoglycemia). It can also be used to monitor how well certain medications or treatments affect your blood sugar levels.

What to Expect Before the Test

You’ll likely fast for a few hours before the test, but the 2-hour postprandial part means you’ll eat a standard meal or snack before coming in. Bring a list of any medications you’re taking, as some may affect results. The blood draw is quick and done in a clinic or lab.

What the Test Results Mean

Lactate levels can vary based on your activity, diet, and overall health. High levels might suggest poor glucose tolerance, certain metabolic diseases, or conditions affecting how your body uses oxygen. Low levels could indicate severe illness or dehydration. Always discuss results with your provider.

Common Conditions Monitored

This test is often used to diagnose or monitor conditions like lactic acidosis (a serious buildup of lactate), mitochondrial disorders, or metabolic syndromes. It can also help assess how well you’re managing diabetes or other blood sugar-related issues.