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Anion gap can be classified as either high, normal or, in rare cases, low. Laboratory errors need to be ruled out whenever anion gap calculations lead to results that do not fit the clinical picture. Methods used to determine the concentrations of some of the ions used to calculate the anion gap may be susceptible to very specific errors.
Albumin is an acute negative phase respondent and not a reliable indicator of nutrition status. [10] Low albumin levels can also indicate chronic malnutrition from protein losing enteropathy. [3] This is often caused or exacerbated by ulcerative colitis, [11] but can also be seen in cardiac disease and systemic lupus erythematosus. [3]
Hyperparathyroidism – can cause hyperchloremia and increase renal bicarbonate loss, which may result in a normal anion gap metabolic acidosis. Patients with hyperparathyroidism may have a lower than normal pH, slightly decreased PaCO2 due to respiratory compensation, a decreased bicarbonate level, and a normal anion gap. [3]
The reference range for total protein is typically 60-80g/L. (It is also sometimes reported as "6.0-8.0g/dl"), [2] but this may vary depending on the method of analysis. Concentrations below the reference range usually reflect low albumin concentration, for instance in liver disease or acute infection.
For children less than three years of age, the normal range is broader, 2.9–5.5 g/dL. [10] Low albumin (hypoalbuminemia) may be caused by liver disease, nephrotic syndrome, burns, protein-losing enteropathy, malabsorption, malnutrition, late pregnancy, artefact, genetic variations and malignancy. [citation needed] High albumin ...
A reference range is usually defined as the set of values 95 percent of the normal population ... being in very low concentration. ... Adults – optimal range: 0.3 ...
Hypoproteinemia is a condition where there is an abnormally low level of protein in the blood. There are several causes that all result in edema once serum protein levels fall below a certain threshold.
Other causes [citation needed] Ingestion of ammonium chloride, hydrochloric acid, or other acidifying salts; The treatment and recovery phases of diabetic ketoacidosis; Volume resuscitation with 0.9% normal saline provides a chloride load, so that infusing more than 3–4L can cause acidosis; Hyperalimentation (i.e., total parenteral nutrition)