Anion gap (AG)

Anion gap refers to the difference between the total number of conventionally measured cations in the serum and the total number of anions, ie the number of sodium ions in the serum minus the number of bicarbonate and chloride ions, which essentially reflects the undetermined anion (UA) and the undetermined cation (UC). )Difference. It is an important indicator to help determine metabolic acidosis and various mixed acid-base imbalances. Basic Information Specialist classification: growth and development check classification: biochemical examination Applicable gender: whether men and women apply fasting: fasting Tips: Flush with heparin beforehand in the syringe. Normal value Plasma was measured at 7 to 16 mmol/L. Clinical significance Reduced in low proteinemia, hypophosphatemia, high potassium, high calcium, hypermagnesemia, lithium poisoning and multiple myeloma. Increased in renal insufficiency, lactic acidosis and ketoacidosis, severe hypokalemia, hypocalcemia, hypomagnesemia. The result is low, the disease may be high : the result of hyperkalemia is high. Possible diseases: hypomagnesemia, renal insufficiency, hypocalcemia, hypokalemia 1. Conventional arterial blood should be taken for examination. If venous blood is to be taken, the forearm should be immersed in warm water at 45 °C for 20 minutes to make the venous blood arterial. It is not advisable to use a tourniquet when drawing blood. 2. Flush with heparin beforehand in the syringe. 3. Ensure that the needle and needle of the syringe are tightly combined, and there must be no air leakage to ensure that the blood sample does not come into contact with the outside air. 4. Send the specimen in time. 5. Some drugs may affect the pH of the blood, and the doctor should be informed of the recent medication before the test. Inspection process The blood of the subject is extracted and measured. The detection method is the same as the oxygen electrode measurement method. Not suitable for the crowd Inappropriate people: Generally there are no people who are not suitable. Adverse reactions and risks Generally, this examination does not have too many adverse reactions and does not have much influence on the body.

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