Herpes 1

There are no preparation instructions.

The following is a list of what is included in the item above. Click the test(s) below to view what biomarkers are measured along with an explanation of what the biomarker is measuring.

Also known as: Herpes Simplex Virus 1 IgG TypeSpecific Antibody HerpeSelect

Hsv 1 IgG Type Specific

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The Herpes 1 test contains 1 test with 1 biomarker.

Brief Description: The Herpes simplex virus 1 test is a test that is used to measure the herpes antibodies to detect a previous infection of herpes.

Also Known As: Herpes Simplex Virus 1 IgG Type-Specific Antibodies Test, Herpes Test, Herpes 1 Test, Herpes IgG Test, Herpes 1 IgG Test

Collection Method: Blood Draw            

Specimen Type: Serum

Test Preparation:

No preparation required

When is a Herpes 1 Antibody test ordered?

When someone has a blister on their genitals, a herpes test may be recommended.

Antibody testing for HSV is usually requested when someone is being screened for a previous HSV infection. When a current infection is suspected, acute and convalescent HSV antibody tests may be conducted.

When someone has another STD and is at risk for infection, a healthcare provider may request an HSV antibody test. Multiple sexual partners, a sexual partner with herpes, HIV infection, or being at risk for HIV because the person is a guy who has sex with men are all risk factors.

What does a Herpes 1 Antibody blood test check for?

The herpes simplex virus causes herpes, which is a common viral ailment. HSV-1 and HSV-2 are the two primary forms of the virus. Herpes simplex virus testing looks for herpes antibodies in the blood to see if you've had herpes before.

Both HSV-1 and HSV-2 are contagious and create little fever blisters that burst open to form open lesions on a regular basis. HSV-1 is more likely to create blisters or "cold sores" around the mouth, whilst HSV-2 is more likely to develop lesions in the genital area; nevertheless, both can affect the oral and genital areas.

The herpes simplex virus can be transmitted from person to person by physical contact while sores are open and healing, as well as when no sores are evident. HSV-2 is more commonly spread through sexual contact, while HSV-1 can also be acquired through oral sex and discovered in the vaginal area. According to the American Sexual Health Association, around 50% of adults in the United States have HSV-1, whereas approximately 17% have HSV-2. Because symptoms are often modest, 90 percent of persons infected with HSV-2 may be unaware of their infection.

When a person is first infected, they may experience visible and painful blisters at the infection site, which normally occur two weeks after the virus is transferred. In most cases, the lesions heal in two to four weeks. Blisters can form in the vaginal area, on the penis, around the anus, or on the buttocks or thighs, among other places. This initial episode may include a second blister breakout as well as flu-like symptoms like fever and swollen glands. Blisters do not affect everyone, and the symptoms can be so subtle that they go unnoticed or be mistaken for something else, such as bug bites or a rash.

When a person is infected with HSV and the infection clears, the virus remains latent in the person's body. The virus might reactivate at times of stress or illness.

People with illnesses that impair the immune system, such as HIV/AIDS or those who have undergone an organ transplant, may experience more frequent and severe HSV outbreaks. While there is no cure for herpes, antiviral drugs can help to control outbreaks and shorten the time between symptoms and active virus shedding.

When a woman transfers the virus to her infant during a vaginal delivery, it can cause neonatal herpes. Neonatal herpes symptoms emerge within the first month of life and, if addressed, can harm a baby's health in the long run. A pregnant woman with herpes who has been diagnosed may be followed routinely prior to delivery to detect reactivation of the infection, which would necessitate a caesarean section to avoid infecting the baby.

The herpes simplex virus can cause encephalitis if it enters the brain. Those who survive this illness may succumb to it or suffer from major, long-term neurological disorders.

Lab tests often ordered with a Herpes 1 Antibody test:

When an HSV-1 IgG test is ordered, it's often part of a broader evaluation of herpesvirus infections and related conditions. Here are some tests commonly ordered alongside it:

  1. Herpes Simplex Virus 2 (HSV-2) IgG Type-Specific Antibody Test:

    • Purpose: To specifically detect antibodies to HSV-2, the virus most commonly associated with genital herpes.
    • Why Is It Ordered: To differentiate between oral and genital herpes infections, as HSV-2 is more commonly associated with genital herpes.
  2. Complete Blood Count (CBC) with Differential:

    • Purpose: To evaluate overall blood health.
    • Why Is It Ordered: To assess for any signs of infection or other hematological abnormalities, especially in cases of severe or disseminated herpes infection.
  3. Syphilis Testing:

    • Purpose: To screen for syphilis, another sexually transmitted infection.
    • Why Is It Ordered: Because sexual activity can transmit multiple infections, a comprehensive STI screening is often recommended.
  4. Urinalysis:

    • Purpose: To analyze various components of urine.
    • Why Is It Ordered: In cases of genital herpes, to check for the presence of blood or other abnormalities that might be associated with herpes infection.
  5. Liver Function Test:

    • Purpose: To assess liver health.
    • Why Is It Ordered: In rare cases, severe herpes infections can affect liver function, particularly in neonatal herpes or disseminated infections.

These tests, when ordered alongside a Herpes Simplex Virus 1 IgG Type-Specific Antibody test, provide a comprehensive evaluation of herpesvirus infection status and its potential implications. They are important for diagnosing the specific type of herpes infection, assessing the risk of other sexually transmitted infections, and guiding appropriate treatment and management. The specific combination of tests will depend on the individual’s symptoms, sexual history, and clinical presentation.

Conditions where a Herpes 1 Antibody test is recommended:

  • HIV
  • Herpes
  • Sexually Transmitted Diseases

How does my health care provider use a Herpes 1 Antibody test?

In people who have genital sores or encephalitis, herpes simplex virus testing is performed to diagnose a current herpes infection. It's also used to test neonates for neonatal herpes, an uncommon but deadly illness in which herpes is contracted during vaginal delivery.

HSV testing can also be performed to determine whether or not you have had a previous infection. Testing may be performed to identify between a primary, active infection and a recurrent illness in persons who have symptoms.

Antibody testing for herpes simplex virus detects immunological proteins produced by the body in response to a herpes infection. Antibodies are divided into two types by the body. Several days after an initial HSV infection, it begins to create IgM class antibodies, which can be detected in the blood for several weeks. Following HSV IgM, it begins to create HSV IgG antibodies. IgG levels in the blood rise for several weeks, then gradually fall and ultimately stable. Once infected with HSV, the infected person will continue to produce modest amounts of HSV IgG.

HSV antibody testing can detect both viral forms, and there are tests that can detect both early IgM antibodies and long-lasting IgG antibodies in persons who have been exposed.

HSV antibody testing can be used to assist diagnose an acute HSV infection if blood samples are collected many weeks apart, albeit it is not as sensitive as PCR or culture (acute and convalescent samples). The HSV IgG antibody levels are compared to check if they have increased significantly, indicating that an infection is present.

Antibody testing may also be used to screen for a previously contracted HSV infection in select populations, such as sexually active adults, possible organ transplant recipients, and those with HIV infection.

What do my Herpes 1 antibody test results mean?

A positive IgG antibody test for HSV-1 implies a past infection.

When comparing data from acute and convalescent samples, a large increase in HSV IgG antibodies indicates an active or recent infection.

Negative HSV antibody results indicate that the person was either not exposed to HSV or that the body did not have enough time to produce HSV antibodies.

We advise having your results reviewed by a licensed medical healthcare professional for proper interpretation of your results.

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