Serum Cortisol (FC)

Cortisol is produced and secreted by the adrenal cortex and belongs to the corpus callosum glucocorticoids. Its secretion is controlled by the anterior pituitary adrenocorticotropic hormone. The determination of serum cortisol directly reflects the secretory function of the adrenal cortex. Basic Information Specialist classification: growth and development examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Found in adrenal tuberculosis and atrophy, pituitary dysfunction, hypothyroidism and some chronic wasting diseases, as well as the intake of drugs such as dexamethasone, levodopa and metal lithium. Normal value: Serum FC (8:00 am to 10:00 am): 138-635 nmol/L Serum FC (4:0.?3-359nmol/L) Above normal: Found in adrenal hyperplasia and tumors, simple obesity, and ingestion of amphetamine. Adrenocorticotropic hormone, ethanol, oral contraceptives, etc. negative: Positive: Tips: Do not eat too greasy, high-protein foods the day before the blood draw, avoid heavy drinking. The alcohol content in the blood directly affects the test results. After 8 pm on the day before the medical examination, fasting should be done to avoid affecting the detection of indicators such as blood glucose in the second sky. Normal value Measured from 8:00 am to 10:00 am, 138 to 635 nmol/L; Measured from 4:00 pm to 6:00 pm, 83 to 359 nmol/L. Clinical significance Increased in adrenal hyperplasia and tumors, simple obesity, and amphetamine intake. Adrenocorticotropic hormone, ethanol, oral contraceptives, etc. Reduced in adrenal cortical tuberculosis and atrophy, hypopituitarism, hypothyroidism and some chronic wasting diseases, as well as intake of drugs such as dexamethasone, levodopa and metallic lithium. Low results may be diseases: hypothyroidism, high results of adult hypopituitarism may be diseases: congenital adrenal hyperplasia, simple obesity matters needing attention First, the precautions before blood draw 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the medical examination, you should fast, so as not to affect the test results. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. 4. The cortical hyperplasia in the blood fluctuates greatly, the highest in the morning, and gradually decreases afterwards, and falls to the lowest level after falling asleep. Clinically, blood samples are generally taken at around 8:00 in the morning for examination. Second, should pay attention after blood draw 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. Inspection process Determined by radioimmunoassay. Not suitable for the crowd People with reduced hematopoietic function such as leukemia, various anemia, myelodysplastic syndrome, or people with thrombocytopenia should pay attention to blood draw, and should not take more or more blood. Adverse reactions and risks 1. After the blood is drawn, do not press the needle hole to avoid subcutaneous hematoma. If there is a small piece of bruise in the blood, it is slightly tender, please don't panic, you can do hot compress after 24 hours to promote the absorption of blood. The general small amount of congestion will gradually absorb in 3 to 5 days and the color will become lighter and return to normal. 2. After the blood draw, symptoms such as dizziness, vertigo, fatigue, etc. should be immediately supine, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved.

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