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Test Code HAVTS Hepatitis A Antibody Total IgG and IgM

EHR Test Codes

  Test Code Test Name
Atlas HAVTS Hepatitis A Total Ab, IgG and IgM
Cerner   Hepatitis A  Antibody Total IgG and IgM 

 

Specimen Requirements

Preparation of Patient: 

None

 

Container Type: 

Gold Top 6mL SST Gel & Clot Activator Tube

Specimen Type:

Serum

 

Specimen Volume: 

2.5 mL Serum minimum .5 mL

 

Specimen Handling/Transport:

Separate serum  from cells within 2 hours of collection.

Transport ambient room temperature or refrigerated 2 - 8°C

 

Specimen Stability/Storage:

4 days ambient room temperature

5 days refrigerated 2-8°C

 

Specimen Rejection:

Gross Hemolysis

Gross Lipemia

Performing Laboratory

Munson Medical Center Laboratories

Chemistry Department

Priority, Frequency, & Turnaround

Priority:

Non-Emergent

 

Frequency:

Monday - Friday

 

Turnaround:

0 - 3 days

Methodology

Chemiluminometric Immunoassay

Reporting

Reference Range:

Negative

 

Critical Decision:

None

 

Result Interpretation:

Index values:

  • Index <0.9 are considered NEGATIVE.  A negative result generally indicates that the patient has not been infected and is susceptible to HAV.
  • Index ≥1.10 are considered POSITIVE.  Indicates exposure or immunity to HAV
  • Index ≥0.90 and <1.10 are considered EQUIVOCAL and must be repeated in duplicate.  Samples which are Equivocal on 2 of the 3 replicates should be reported as Equivocal, and second sample should be collected and tested no less than 2 - 4 weeks later.

Clinical Significance

Hepatitis is an inflammatory disease of the liver that can severely damage the organ.  The disease can result from non-infectious causes or from infectious viral and bacterial agents.

 

Tests for total anti-HAV antibodies do not discriminate among different antibody classes.  The presence of anti-HAV in serum indicates previous exposure to HAV and long-lasting acquired immunity. Detection of anti-HAV is therefore critical in determining immunity to HAV, whether acquired as a result of natural HAV infection or vaccination. Anti-HAV is also crucial in identifying HAV susceptible individuals in pre-vaccination screening programs.

CPT Code(s)

86708

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