Comprehensive Metabolic Panel

This test is for patients 30 days old or older.  For patients < 30 days old, order N/CHEM, Chemistry Profile (Neo).

CMP

For patients < 30 days old, order N/CHEM, Chemistry Profile (Neo).

Sodium, Potassium, Chloride, Carbon Dioxide, Blood Urea Nitrogen, Creatinine, Glucose, Calcium, Alkaline Phosphatase, ALT (SGPT), AST (SGOT), Total Bilirubin, Total Protein, Albumin

Serum (gold top) tube

0.5 mL

Lithium Heparin Plasma (green top) tube

Protect specimen from prolonged exposure to light to avoid a falsely decreaesd Total Bilirubin result.   This test is for patients 30 days old or older.  For patients < 30 days old, order N/CHEM, Chemistry Profile (Neo).

Serum (gold top) tube or Lithium Heparin Plasma (green top) tube

Room Temperature or Refrigeration

Room Temperature - 4 hours; Refrigerated - 3 days; Do not freeze. Stabilities for individual tests will vary. Shortest stability times are listed. See individual tests for stability of each test.

Hemolysis, Quantity Not Sufficient, EDTA contamination (purple top tube), IV contamination

Daily upon receipt

Upon completion of analysis

Prolonged exposure to light can cause breakdown of bilirubin in the specimen, resulting in a falsely decreased Total Bilirubin value. Heparinized catheters may contain benzalkonium chloride and should not be used for collection. Do not use specimens obtained through catheters used to infuse hyperalimentation fluid. Blood from patients receiving Hypaque radiographic contrast agent cannot be used due to interference with calcium testing. Do not use blood on patients receiving EDTA therapy. Suramin, an antiparasitic drug, has been reported to cause a bias of -10% in calcium results at a suramin concentration of 300 μg/mL. Calcium results from recumbent patients may be 3% lower. Ammonium ions may cause an increase in measured BUN/UREA value equivalent to the specimen’s nitrogen content. Albumin concentrations vary with posture. Results from an upright posture may be approximately 0.3 g/dL higher than those from a recumbent posture. A delay in centrifugation of several hours can result in a falsely increase potassium result and a falsely decreased glucose result, and may affect other tests as well. Prolonged exposure to light may result in a falsely decreased Total Bilirubin result. High bilirubin levels may affect some results.

See report or individual tests for reference ranges.

The Comprehensive Metabolic Panel (CMP) is used as a broad screening tool to evaluate organ function and check for conditions such as diabetes, liver disease, and kidney disease. The CMP may also be ordered to monitor known conditions, such as hypertension, and to monitor people taking specific medications for any kidney- or liver-related side effects. The Comprehensive Metabolic Panel contains all tests in a Basic Metabolic Panel, plus liver enzymes and proteins. For patients < 30 days old, order N/CHEM, Chemistry Profile (Neo).