HIV 1+2 Antibody/p24 Antigen
Clinical Background:
Screening test for HIV infection (4th generation assay). HIV Serology Measures the amount of antibodies against HIV and HIV specific antigens that are present in the blood. A positive test must be ...
Screening test for HIV infection (4th generation assay). HIV Serology Measures the amount of antibodies against HIV and HIV specific antigens that are present in the blood. A positive test must be confirmed by other tests before definitive diagnosis can be made. The test may be positive 2-4 weeks after infection however to fully exlude recent infection a sample should be sent at least 3 months after suspected exposure.
Test Details
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Discipline:
Microbiology
Microbiology
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Specimen Container Adult:
Clotted blood - Gold SST
Clotted blood - Gold SST
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Specimen Container Paediatric:
Clotted blood
Clotted blood
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Minimum Volume Adult:
5 ml
5 ml
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Minimum Volume Paediatric:
1 ml
1 ml
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Special Requirement:
Send to laboratory as quickly as possible. If delays likely, refrigerate at 2-8 deg C
Send to laboratory as quickly as possible. If delays likely, refrigerate at 2-8 deg C
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Sample Stability:
Stable for up to 24 hours
Stable for up to 24 hours
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Transport Requirements:
Standard
Standard
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Add On Test:
Possible up to 5 days
Possible up to 5 days
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Quality Assurance:
UK National External Quality Assurance Scheme (UKNEQAS)
UK National External Quality Assurance Scheme (UKNEQAS)
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Interpretation:
May be negative for up to 3 months following infection (window period).
May be negative for up to 3 months following infection (window period).
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Reference Ranges:
None available
None available
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Factors Affecting Result:
If delays likely, refrigerate at 2-8 deg C
If delays likely, refrigerate at 2-8 deg C