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Test Code C Chemistry 24 Panel

Important Note

For outreach ordering only. Not available for internal ordering.

Synonyms/Keywords

Chem 24 panel, Chem 24, Chem 24 Profile

Specimen Requirements

Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
No Plasma/Serum Lithium-heparin Plasma Separator (PST), Serum Separator Tube (SST) Lithium or Sodium-heparin Green Top Tube (GTT), Red Top Tube (RTT) 2 mL 0.5 mL 0.8 mL Whole Blood

Collection/Processing Instructions

Test panel includes bilirubin which is light sensitive, minimize light exposure during storage/transport.  

 

Samples collected in a RTT or GTT must be removed from cells within one hour for storage or transport.

 

Samples collected in gel barrier tubes must be removed from the primary tube prior to transporting to Marshfield. Do not send the primary collection tube.

Specimen Stability Information

Specimen Type Temperature Time
Plasma/Serum Ambient 1 day
Refrigerated 2 days
Frozen 2 months

Rejection Criteria

Grossly hemolyzed samples
Specimens not separated from cells within 2 hours
Drug Eltrombopag: interferes with the totalbilirubin assays

Test Components

Albumin, Alkaline Phosphatase, Alanine Amino Transferase, Aspartate Amino Transferase, Bicarbonate, Urea Nitrogen, Calcium, Chloride, Creatinine, Glucose, Potassium, Sodium, Total Bilirubin, Direct Bilirubin, Indirect Bilirubin, Gamma Glutamyl Transferase, Lactate Dehydrogenase, Total Protein, Anion Gap, Uric Acid, Phosphorus, Cholesterol, Triglycerides, LDL Cholesterol, A/G ratio, and BUN/Creat Ratio

Test Information

Medicare patients must sign a waiver before specimen is collected since Medicare considers this a non-covered screening panel.  Individual tests ordered for diagnostic purposes are covered.

Interferences

Hemolyzed samples will falsely increase K and AST

 

Exposure to light will falsely decrease TBIL

Reference Range Information

Performing Location Reference Range
Marshfield See individual test listings for reference ranges

Marshfield Labs Performing Department

Marshfield Labs Chemistry

Performing Information

Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Marshfield Monday through Sunday 2-4 hours See individual test for methodology/ Beckman DXC

Outreach CPT Codes

CPT Modifier
(if needed)		 Quantity Description Comments
80053     Metabolic Panel, Comprehensive  
82374     CO2  
82465     Cholesterol  
82977     GGT  
83615     LDH  
84100     Phosphorus  
84478     Triglyceride