What is normal blood HCO3?

What is normal blood HCO3?

Normal Results Arterial blood pH: 7.38 to 7.42. Oxygen saturation (SaO2): 94% to 100% Bicarbonate (HCO3): 22 to 28 milliequivalents per liter (mEq/L)

What is the pH of HCO3?

Normally, at pH 7.4, a ratio of one part carbonic acid to twenty parts bicarbonate is present in the extracellular fluid [HCO3-/H2CO3]=20. A change in the ratio will affect the pH of the fluid. If both components change (ie, with chronic compensation), the pH may be normal, but the other components will not.

What does low pH and HCO3 mean?

Metabolic acidosis is a clinical disturbance defined by a pH less than 7.35 and a low HCO3 level. The anion gap helps determine the cause of the metabolic acidosis. An elevated anion gap metabolic acidosis can be caused by salicylate toxicity, diabetic ketoacidosis, and uremia (MUDPILES).

What does HCO3 mean in a blood test?

This test measures the amount of bicarbonate, a form of carbon dioxide, in your blood. Bicarbonate, also known as HCO3, is a byproduct of your body’s metabolism. Your blood brings bicarbonate to your lungs, and then it is exhaled as carbon dioxide. Your kidneys also help regulate bicarbonate.

Why is ratio of pH and HCO3 important?

Bicarbonate ions and carbonic acid are present in the blood in a 20:1 ratio if the blood pH is within the normal range. With 20 times more bicarbonate than carbonic acid, this capture system is most efficient at buffering changes that would make the blood more acidic.

What causes low HCO3?

Examples of conditions that can cause a low bicarbonate level include: Addison disease. Chronic diarrhea. Diabetic ketoacidosis.

What causes high HCO3 levels?

A high level of bicarbonate in your blood can be from metabolic alkalosis, a condition that causes a pH increase in tissue. Metabolic alkalosis can happen from a loss of acid from your body, such as through vomiting and dehydration.

Is HCO3 metabolic or respiratory?

The PaCO2 is elevated, indicating a respiratory acidosis, and the HCO3 is elevated, indicating a metabolic alkalosis. The value consistent with the pH is the PaCO2. Therefore, this is a primary respiratory acidosis.

What is the normal range for HCO3?

Determine the metabolic component (HCO3 –) Normal HCO3 – range 22–26 mmol/L. HCO3 – <22 mmol/L: Primary metabolic acidosis if pH <7.35. Renal compensation for respiratory alkalosis if pH >7.45. HCO3 – >26 mmol/L: Primary metabolic alkalosis if pH >7.45.

What is the normal value of HCO3?

The normal range for pH is 7.35 to 7.45. A value greater that 7.45 indicates alkalosis. The normal value for HCO3 is 22-26.

What causes High HCO3?

Upper value of bicarbonate (HCO3) test is 23 mmol/L (or 140 mg/dL). High levels may be caused by diuretics, heart disease, chronic obstructive pulmonary disease, fluid in the lungs, dehydration, vomiting and overuse of antacids.

What is the difference between CO2 and HCO3?

HCO3 vs CO2. Carbon dioxide (CO2) comes in a form of gas and is a waste product resulting from the body’s metabolism. The blood transports carbon dioxide to the lungs where it will be exhaled. More than 90 percent of CO2 in the human blood is available as the bicarbonate (HCO3) form.