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Cytomegalovirus (CMV) IgG Ab avidity-13645

Test info

Test name:

Cytomegalovirus (CMV) IgG Ab avidity

Test number:

13645

Excellian order number:

LAB13645

Abbreviation:

CMVIGGAVID

Useful for:

The intended use of this test is to determine the avidity of CMV IgG antibody in patients known to be positive for CMV IgG antibody.

Limitations:

This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.

Specimen

Specimen type:

Serum

Collection container:

Gold serum separator (SST) tube

Volume:

1 mL

Minimum volume:

0.5 mL

Collection instructions:

Immediately following collection, thoroughly mix sample by gently inverting 5 times

Processing instructions:

Allow sample to clot for a minimum of 30 minutes
Spin within two (2) hours of sample collection
Transfer 1 mL (minimum 0.5 mL) serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Transport container:

Transfer vial/tube with cap - 12mL (LabCorp)

Alternate specimen type:

1 mL

Alternate collection container:

Red serum vial/tube, 5 mL

Alternate processing instructions:

Allow sample to clot
Spin
Transfer 1 mL (minimum 0.5 mL) serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum, within two (2) hours of sample collection

Transport and stability:

Refrigerated (preferred) - 14 days

Ambient - 14 days

Frozen - 14 days

Reason for rejection:

Gross hemolysis
Visible microbial contamination

Performance

Performing lab:

LabCorp (006505): R-LC

Days set up:

2 x week

TAT:

5 days

Method:

Enzyme-Linked Immunosorbent Assay (ELISA)

Clinical and Interpretive info

Reference ranges:

Indication of low-avidity antibodies: <0.40 Index

Equivocal Range: 0.40 - 0.60 Index

Indication of high-avidity antibodies: >0.60 Index

Billing

CPT codes:

86644

Tracking

Date created:

04/29/2019

Revised date:

02/14/2023

Review date:

02/16/2023