Providing the body with calories before the test may cause the results to worsen in the form of an increase in glucose or cholesterol. Only a small amount of non-carbonated water can be drunk before the test. You should avoid sudden changes in diet in the form of fasting or heavy and fatty meals the day before the examination. Remember to refrain from drinking coffee, tea or chewing gum. The term fasting means the state after about 12 hours not eating meals and fluids. We should perform tests on an empty stomach Tests should be performed in the morning due to the variability of parameters during the day: aldosterone, ACTH, zinc, DHEA, erythropoietin, estriol, phosphorus, growth hormone, FSH, cortisol, LH, copper, potassium, prolactin, 17-OH-progesterone, PTH, TSH, iron.

In the case of urgent medical examinations and/or tests ordered by a doctor, blood may be taken at other times of the day. Due to the secretion of certain substances, some tests should always be performed at the same time. This is important because the human body is subject to variations depending on the time of day, which is also reflected in some laboratory values. You should register for blood in the morning, preferably between 7:00 and 10:00. Therefore, when you go to the laboratory, you need to remember a few basic rules: 1. Inadequate preparation for testing, sampling and storage may result in false results.

Take hormones on the right days of the cycle

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