Lab Test

ICU Panel

ICU Panel (Inpatients Only)

Test Codes



  • This test is only available for order on inpatients.
  • Blood should be obtained with as little venous stasis (i.e., tourniquet time) as possible. Fist clenching may result in false elevation of potassium and calcium.
  • Specimen should be kept tightly closed since CO2 will diffuse out if the tube is uncapped. This will cause an erroneously decreased value.

Specimen Collection Criteria


Preferred Sample:  One Light Green Top Plasma Separator Tube (PST)(Minimum Whole Blood: 4.0 mL)

Acceptable Sample:  One Gold Top SST (Minimum Whole Blood:  4.0 mL)


COLLECT:  One Gold Top SST (Minimum Whole Blood:  4.0 mL) 

Contact Laboratory for acceptability of other tube types.
See Minimum Pediatric Specimen Requirements for Microtainer® collection.
Caution: Never refrigerate collection tube prior to centrifugation. This may cause a falsely elevated potassium.

Rejection Criteria

Moderate to grossly hemolyzed specimens.

Red-top tubes with serum not separated from cells within two hours of collection.

In-Lab Processing

Let SST specimens clot 30-60 minutes. Centrifuge SST tubes or Microtainers® to separate serum from cells. Deliver immediately to the appropriate testing station.


Specimen Stability for Testing:

Centrifuged SST Tubes and Microtainers® with Separator Gel
Room Temperature (20-26°C or 68-78.8°F): 2-4 hours
Refrigerated (2-8°C or 36-46°F): 7 days*
Frozen (-20°C/-4°F or below): Unacceptable

Red-top Tubes and Microtainers® without Separator Gel
Room Temperature (20-26°C or 68-78.8°F): 2-4 hours
Refrigerated (2-8°C or 36-46°F): Unacceptable
Frozen (-20°C/-4°F or below): Unacceptable

Serum Specimens (Pour-Overs)
Room Temperature (20-26°C or 68-78.8°F): 2-4 hours
Refrigerated (2-8°C or 36-46°F): 7 days*
Frozen (-20°C/-4°F or below): 7 days

*Carbon Dioxide (CO2) has a stability of 3 days refrigerated. Phosphorus has a stability of 4 days refrigerated at Grosse Pointe, and Total Bilirubin has a stability of 5 days refrigerated at Grosse Pointe. CO2 will not be reported for ICU Panel add-on requests on specimens greater than 72 hours past the time of collection.

Specimen Storage in Department Prior to Disposal:

Refrigerated (2-8°C or 36-46°F): 7 days


Grosse Pointe Chemistry Laboratory
Royal Oak Automated Chemistry Laboratory
Troy Chemistry Laboratory


Sunday – Saturday, 24 hours a day. 
Routine results available within 4 hours.

Reference Range

See specific assay for reference range: Albumin, Alkaline Phosphatase, ALT, AST, Bilirubin, Total, BUN (Blood Urea Nitrogen), Calcium, Chloride, CO2, Creatinine, Glucose, Magnesium, Potassium, Phosphorus, Sodium and Total Protein.

Test Methodology

Potentiometry, Spectrophotometry.


See specific analytes or interpretation. 

This assay includes: AlbuminAlkaline PhosphataseALTASTBilirubin, TotalBUN (Blood Urea Nitrogen)Calcium
ChlorideCO2CreatinineGlucoseMagnesiumPotassiumPhosphorusSodium and Total Protein.

Clinical Utility

The ICU panel is used for monitoring patients in the intensive care units.

CPT Codes

82040, 82247, 82310, 82374, 82435, 82565, 82947, 83735, 84075, 84100, 84132, 84155, 84295, 84450, 84460, 84520.


Last Updated


Microtainer® and Vacutainer® are registered trademarks of Becton, Dickinson and Company.
UroVysion® is a registered trademark of Abbott Laboratories. ThinPrep® is a registered trademark of Hologic, Incorporated.


This directory currently reflects information only for specimens collected and/or processed at the
Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.