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Test Code GAL1 GALAD Score, Serum


Specimen Required


Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum.

 

Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Collection Container/Tube: 

Preferred: Serum gel  

Acceptable:  Red top 

Submission Container/Tube: Plastic vial 

Specimen Volume: 0.5 mL 

Collection Instructions: Centrifuge and aliquot serum into a plastic vial.


Useful For

Calculation of the GALAD (gender, age, alpha-fetoprotein L3% [AFP-L3], AFP, des-gamma-carboxy prothrombin) model score for hepatocellular carcinoma development in patients with chronic liver disease

Method Name

Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum

 

Gender, Age, Alpha-fetoprotein L3% (AFP-L3), AFP, Des-gamma-carboxy prothrombin (GALAD) Model Score Calculation

Reporting Name

GALAD Model Score

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 90 days
  Refrigerated  5 days

Reject Due To

Gross hemolysis Reject
Gross lipemia OK
Gross icterus OK

Clinical Information

Biomarkers of hepatocellular carcinoma (HCC) include alpha-fetoprotein (AFP), third electrophoretic form of lentil lectin-reactive AFP (AFP-L3), and des-carboxy-prothrombin (DCP). The GALAD (gender, age, AFP-L3, AFP, des-gamma-carboxy prothrombin) model combines these three biomarkers with the patient's gender and age to estimate the risk of HCC in patients with chronic liver disease based on the following equation: Z = -10.08 + 0.09 x age + 1.67 x sex + 2.34 log(10) (AFP) + 0.04 x AFP - L3 + 1.33 x log(10) (DCP), where sex = 1 for males, 0 for females.

 

The GALAD score is calculated using the lower limit of quantitation (LLOQ) when one or more of the following values are below the LLOQ: %L3, Total AFP, or Des-Gamma-Carboxy Prothrombin.. In the event this occurs, the GALAD score is resulted as (<)GALAD score.

 

The GALAD model has been demonstrated to have higher diagnostic accuracy for the detection of HCC when compared to the use AFP, AFP-L3, and DCP markers alone or in combination. The performance of the GALAD score has also been reported to be superior to ultrasound for HCC detection.

Reference Values

Only orderable as part of a profile. For more information see HCCGS / Hepatocellular Carcinoma Risk Panel with GALAD Score, Serum

 

Not applicable

Day(s) Performed

Monday, Wednesday, Friday

Report Available

Same day/1 to 4 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

Not Applicable