Do you need to fast for blood biochemistry?

Need.
Blood biochemistry is to collect specimens through the blood, to detect whether the function of human organs is normal, including liver function, kidney function, cardiac enzyme profile, blood electrolytes, blood glucose, blood uric acid, blood lipids and other laboratory indicators, to do this test is recommended fasting.
Fasting is required before the blood biochemistry test, fasting means not eating or drinking for at least 8 hours before the blood test, eating will affect the accuracy of the indicators.
You should not be too tired before the test, avoid staying up late at night, and the results may be affected if you do the liver function test during menstruation, so try to avoid menstruation, and wait for 3~7 days after your menstruation is completely cleared before you go for the test.
You can also go to the hospital to consult the doctor to understand the precautions before doing blood biochemistry test.