Accidentally drank coffee before blood test
- is black coffee ok before fasting labs
- is black coffee okay before fasting labs
- is black coffee ok for fasting labs
- is black coffee ok before fasting lab work
How does coffee affect blood test
I accidentally ate before a fasting blood test!
Effect of Black Coffee on Fasting Metabolic Markers and an Abbreviated Fat Tolerance Test
Abstract
Objectives
Common clinical recommendations direct patients to report fasted when blood work (e.g., triglycerides [TG], glucose [Glu]) will take place, which typically excludes black coffee consumption.
Despite its negligible calorie content, caffeinated coffee increases fatty acid mobilization. However, whether this effect meaningfully alters fasting metabolic testing or influences the results of a fat tolerance test is unclear.
We investigated whether allowing black coffee intake within a fast prior to blood work affected fasting TG and Glu, as well as the postprandial lipemic and glycemic response following an abbreviated fat tolerance test.
Methods
In a randomized crossover design, participants were instructed to consume only water, or were allowed 8 fluid ounces of black coffee at the end of a 10-hr fast.
Next, TG and Glu were assessed using the Cholestech LDX system (Alere Cholestech: Hayward, CA, USA) before and after a previously validated 4-hr fat tolerance test (9 kcal/
- is black coffee okay for fasting labs
- is black coffee ok before fasting blood work