Coupon Codes not valid for this testing. Fasting Required: Yes 10 - 12 Hours Lab: Quest Diagnostics Specimen: Blood Results: Average processing time 3-5 Days Note: Result turnaround times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance. Description: VLDL stands for very low density lipoprotein. This test measures the amount of very low-density lipoprotein (VLDL) in your blood. It is one of the three main types of lipoproteins. VLDL contains the highest amount of triglycerides. VLDL is a type of "bad cholesterol" because it helps cholesterol build up on the walls of arteries.