The Herpes Simplex Virus-1 (HSV-1) Test detects either the virus itself or antibodies (IgG/IgM) produced by the body in response to HSV-1 infection. HSV-1 cause oral herpes (commonly known as cold sores) but can also cause genital herpes, especially through oral-genital contact. This Test can identifying both symptomatic and asymptomatic infections and in distinguishing HSV-1 from HSV-2.
Indications for the Test
This test is recommended for individuals who:
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Present with cold sores, mouth ulcers, or blisters on the lips or face.
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Experience genital sores, especially following oral sex.
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Have a partner diagnosed with HSV-1 or who displays symptoms.
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Are pregnant or planning pregnancy, due to the risk of neonatal herpes.
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Experience unexplained genital symptoms or recurrent ulcers.
Patient Preparation
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No fasting is required for the antibody (blood) test.
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For swab-based testing, do not apply antiviral creams or ointments for at least 24 hours before specimen collection.
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Inform the healthcare provider if you are on antiviral medication, as it may impact test results.
Reference Values
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Negative: No HSV-1 antibodies detected; however, early testing post-exposure may result in false negatives.
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IgG Positive: Indicates past exposure to HSV-1; the virus may be dormant but present in the body.
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IgM Positive: Suggests a current or recent infection and may indicate an initial outbreak.
Interpretation of Results
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Negative: No detectable antibodies or viral material. May require retesting if done too early after exposure.
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IgG Positive: Confirms previous infection; person is likely a carrier even without symptoms.
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IgM Positive: Indicates a new or reactivated infection and may correlate with active symptoms.
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Antibody testing cannot determine the exact timing of infection and should be interpreted alongside clinical presentation.
Turnaround Time
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Blood antibody test results: typically available in 1 to 3 days.
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Swab or PCR test results: typically available in 1 to 5 days, depending on the lab.
Order Herpes Simplex Virus-1(HSV-1) Test
Please click the ‘Order Test’ button and put the Herpes Simplex Virus-1 (HSV-1) Test in your cart.
You are welcome to visit our laboratory in Kilimani, Nairobi. This will initiate the process for obtaining your test