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CHEM-20
Alternate Names : Metabolic Panel 20, Sequential Multi-Channel Analysis with Computer-20, SMA20, SMAC20
How is the Test Performed?
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The puncture site is cleaned with antiseptic, and a band is placed around the upper arm to apply pressure and restrict blood flow through the vein. This causes veins below the band to fill with blood.
A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. During the procedure, the band is removed to restore circulation. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding.
Infant or young child:
The area is cleaned with antiseptic and punctured with a sharp needle or a lancet. The blood may be collected in a pipette (small glass tube), on a slide, onto a test strip, or into a small container. A bandage may be applied to the puncture site if there is any continued bleeding.
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• Definition
• Why is the Test Performed?
• How is the Test Performed?
• How to Prepare for the Test?
• How will the Test Feel?
• Normal Values
• What do Abnormal Results Mean?
• Special Considerations
• Risks
Topics that might be of interest to you Tests & Exams
• Albumin - Serum
• ALP
• ALT
• AST
• Bilirubin
• BUN
• CO2
• Creatinine - Serum
• Gamma-Glutamyl Transpeptidase
• Glucose Test
• LDH
• Potassium Test
• Serum Calcium
• Serum Chloride
• Serum Magnesium - Test
• Serum Phosphorus
• Serum Sodium
• Total Protein
• Uric Acid
Other Topics
• Adolescent Test or Procedure Preparation
• Electrolytes
• Infant Test/Procedure Preparation
• Ions
• Preschooler Test/Procedure Preparation
• School Age Test/Procedure Preparation
• Toddler Test/Procedure Preparation
Review Date : 8/7/2003
Reviewed By : Irfan A. Agha, M.D., Department of Medicine, Renal Division, St. Louis University, St. Louis, MO. Review provided by VeriMed Healthcare Network.
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