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Test Code LAB20 Hepatic Function Panel

Performing Laboratory

St. Louis Children's Hospital Laboratory - Chemistry

Specimen Requirements

Note: This test includes analysis of: Albumin; Alkaline Phosphatase; ALT; AST; Bilirubin, Total; Bilirubin Direct; and Total Protein.

Patient Preparation: None

Collection Container/Tube:

Preferred: Mint green-top lithium heparin (MNTGRN LiHep) tube

Acceptable: Green samplette/microtainer, plain red-top tube, or Gold SST gel tube

Submission Container/Tube: If specimen is coming from outside facility and collected in a microtainer or plain red-top tube aliquot processed sample into a plastic vial for transport (labeling with specimen type).

Specimen Collection Volume: 1.0 mL (minimum 0.6 mL)

Special Instructions: Send to lab promptly.

Sample Rejection

Mislabled or unlabeled specimens

Logistics

Test Availability: Monday-Sunday

Cut-off time: None, performed as received

Turnaround Time: Same Day; 2 hours from receipt in performing lab

Reference Values

Reference Interval: See individual test listings

Critical Value: See individual test listings

Any Critical result will be called back automatically initially 

 

Methodology

See individual test listings

Limitations

  • Hemolysis can interfere with AST concentrations

Additional Information

FOR SLCH CORE LABORATORY USE ONLY

Lab Processing Instructions: Centrifuge to separate within 4 hours of collection. If specimen is collected in microtainer or plain red-top tube aliquot sample into a Roche false-bottom tube for testing (labeling aliquot with specimen type).

Processed Volume: 0.3 mL plasma/serum

Analyte Stability:

Specimen Type Temperature Time
Whole Blood (unprocessed)  Ambient 4 hours 
Plasma/Serum (processed) Refrigerated                                            (preferred) 4 hrs if exposed to light (24hrs if protected from light)
  Ambient  4 hrs if exposed to light (24hrs if protected from light)
  Frozen  avoid
*Stability listed is based on bilirubin stability which has shortest stability time. For individual component stability, see stability chart

 

NOTE: If specimen is received in plain, red-top or serum gel tube, check if LIS order is for serum or plasma. If order is for "Hep FuncPnlP" cancel and re-order as "Hep FuncPnlS".

Test Classification and CPT Code

80076

LOINC

AST 30239-8   ALT 1743-4
Albumin 1751-7   Alk Phos 6786-6
Bilirubin, total 1975-2                                 Protein, Totl 2885-2

 

Last Reviewed

06/2025