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  1. Home
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  4. Chloride test - blood

Chloride test - blood

Tests
Serum chloride test

Chloride is a type of electrolyte. It works with other electrolytes such as potassium, sodium, and carbon dioxide (CO2). These substances help keep the proper balance of body fluids and maintain the body's acid-base balance.

This article is about the laboratory test used to measure the amount of chloride in the fluid portion (serum) of the blood.

A blood sample is needed. Most of the time blood is drawn from a vein located on the inside of the elbow or the back of the hand.

How to Prepare for the Test

Many medicines can interfere with blood test results.

  • Your health care provider will tell you if you need to stop taking any medicines before you have this test.
  • DO NOT stop or change your medicines without talking to your provider first.

Why the Test is Performed

You may have this test if you have signs that your body's fluid level or acid-base balance is disturbed.

This test is most often ordered with other blood tests, such as a basic or comprehensive metabolic panel.

Normal Results

A typical normal range is 96 to 106 milliequivalents per liter (mEq/L) or 96 to 106 millimoles per liter (millimol/L).

Normal value ranges may vary slightly among different laboratories. Talk to your provider about the meaning of your specific test results.

The example above shows the common measurement range for results for these tests. Some laboratories use different measurements or may test different specimens.

What Abnormal Results Mean

A greater-than-normal level of chloride is called hyperchloremia. It may be due to:

  • Addison disease
  • Carbonic anhydrase inhibitors (used to treat glaucoma)
  • Diarrhea
  • Metabolic acidosis
  • Respiratory alkalosis (compensated)
  • Renal tubular acidosis

A lower-than-normal level of chloride is called hypochloremia. It may be due to:

  • Bartter syndrome
  • Burns
  • Congestive heart failure
  • Dehydration
  • Excessive sweating
  • Hyperaldosteronism
  • Metabolic alkalosis
  • Respiratory acidosis (compensated)
  • Syndrome of inappropriate diuretic hormone secretion (SIADH)
  • Vomiting

This test may also be done to help rule out or diagnose:

  • Multiple endocrine neoplasia (MEN) II
  • Primary hyperparathyroidism

References

Giavarina D. Blood biochemistry: measuring major plasma electrolytes. In: Ronco C, Bellomo R, Kellum JA, Ricci Z, eds. Critical Care Nephrology. 3rd ed. Philadelphia, PA: Elsevier; 2019:chap 54.

Seifter JR. Acid-base disorders. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 25th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 118.

Tolwani AJ, Saha MK, Wille KM. Metabolic acidosis and alkalosis. In: Vincent J-L, Abraham E, Moore FA, Kochanek PM, Fink MP, eds. Textbook of Critical Care. 7th ed. Philadelphia, PA: Elsevier; 2017:chap 104.

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Review Date: 4/29/2019

Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

 
 
 

 

 

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Tests for Chloride test - blood

  • Chloride test - blood

  • Sodium blood test

  • Acid loading test (pH)

  • Cerebral spinal fluid (CSF) collection

  • Neonatal cystic fibrosis screening test

  • Comprehensive metabolic panel

  • Basic metabolic panel

  • CSF analysis

Related Information

  • Ions

  • Sodium blood test

  • Hyperventilation

  • Metabolic acidosis

  • Proximal renal tubular acidosis

  • Addison disease

  • Respiratory acidosis

  • Heart failure - overview

  • Gastric suction

  • Antidiuretic hormone blood test

  • Heart failure

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