What does Toxoplasma IgM negative mean?

Negative IgM and IgG results indicate that the person has no immunity against toxoplasmosis and, if a woman becomes infected in early pregnancy, the parasite could be transmitted to the fetus. Positive IgG results indicate that the person is immunized and is not at risk of transmitting the infection to the fetus.

What does a negative IgM herpes test mean?

Herpes IgM Test Results A positive test result means that herpes IgM was detected in the sample. A negative result means that no IgM was detected. An equivocal test result means that the test was unable to determine whether or not there was an antibody present.

Can you have herpes and test negative for antibodies?

Normal Results A negative (normal) test most often means you have not been infected with HSV-1 or HSV-2. If the infection occurred very recently (within a few weeks to 3 months), the test may be negative, but you may still be infected. This is called a false negative.

Does having herpes antibodies mean you have herpes?

An antibody is a substance made by the body’s immune system when it detects harmful substances such as the herpes virus. This test does not detect the virus itself.

What does it mean if IgM is positive and IgG is negative?

What does it mean if the specimen tests negative for IgM and/or IgG antibodies against virus that causes COVID-19? A negative test result with this test means that SARS-CoV-2 specific antibodies were not present in the specimen above the limit of detection.

How long does herpes IgM stay positive?

The time required for the development of IgG antibodies following HSV infection varies from 21 to over 42 days with most individuals having detectable IgG 21–28 days after exposure to the infection and probably lasting for life.7–,9 IgM antibodies are usually detectable 9–10 days after exposure and last 7–14 days.

What does it mean if your IgG is positive?

What does it mean if I have a positive test result? If you have a positive test result (antibodies are detected), you may have been infected with the virus that causes COVID-19 at some point in the past. There is still a chance that the antibodies indicate past infection due to other coronaviruses.

Is it safe to use IGM for herpes simplex?

In this month’s Hot Topic, Dr. Elli Theel will discuss the over utilization of IgM serologic testing for Herpes Simplex virus and the recommendation by multiple agencies, including the CDC and the Infectious Diseases Society of America, to avoid using this test for clinical decision making purposes.

Is the torch HSV IgM test still available?

The type-specific HSV IgG test, however, will remain orderable. This obsoletion will also lead to the discontinuation of the ToRCH IgM profile. Clinicians will be able to order the other components of this profile, including the Toxoplasma IgM and the CMV IgM assays individually.

When to use type specific IgG testing for HSV?

When it comes to HSV serologic testing, there are number of utilization recommendations that have been put forth by the CDC and other agencies. First, type-specific HSV IgG testing may be useful in the following scenarios, including in patients with recurrent genital or atypical symptoms with negative HSV RT-PCR or culture results.

Why did MCL discontinue their HSV IgM testing?

Ultimately, we concluded that HSV IgM testing is over-utilized with negligible added value to patient care. Therefore, based on the CDC, IDSA, and AAP recommendations, and based on our internal utilization review, MCL will discontinue HSV IgM testing.