What is latex slide agglutination test?

The latex agglutination test is a laboratory method to check for certain antibodies or antigens in a variety of body fluids including saliva, urine, cerebrospinal fluid, or blood.

When performing a latex slide agglutination a positive indicates what?

Agglutination of the beads in any of the dilutions is considered a positive result, confirming either that the patient’s body has produced the pathogen-specific antibody (if the test supplied the antigen) or that the specimen contains the pathogen’s antigen (if the test supplied the antibody).

What is latex agglutination inhibition method?

Gravindex is an agglutination inhibition test performed on a urine sample to detect pregnancy. It is based on double antigen antibody reaction. The test detects the prevention of agglutination of HCG-coated latex particles by HCG present in the urine of pregnant women.

What is the principle of the latex agglutination test?

Latex agglutination is observed when a sample containing the specific antigen (or antibody) is mixed with an antibody (or antigen) which is coated on the surface of latex particles. The reaction between a particulate antigen and an antibody results in visible clumping called agglutination.

Why is latex agglutination test commonly used?

Latex agglutination testing, also called latex fixation, is a diagnostic study that is widely used as a laboratory method to identify certain antibodies and antigens. The test uses a variety of body fluids including blood, urine, saliva and cerebrospinal fluid, which are dependable on what type of sample is needed.

What is the role of the RF latex reagent?

RF Latex is used for the determination of rheumatoid factor (RF) in human serum. The RF reagent is based on an immunological reaction between human IgG bound to biologically inert latex particles and rheumatoid factors in the test specimen.

What is the basis of the slide agglutination latex test for S aureus identification?

The MRSA screen test is a latex agglutination test based on the reaction of latex particles sensitized with monoclonal antibodies against PBP 2a of S. aureus and PBP 2a extracted from tested colonies. The test was performed according to the manufacturer’s instructions.

Why is it important to test for the PBP2a protein during the latex agglutination test?

The PBP2a test shows poor sensitivity when used directly with positive blood cultures. The gene product of mecA, an altered penicillin binding protein (PBP2a), is the hallmark of methicillin resistance in staphylococci.

What does negative in prega news means?

A negative pregnancy test result means the test hasn’t detected hCG in your urine. If your period is very late, or you’ve skipped your period, and you get a negative result, you are unlikely to be pregnant.

When can I use pregnancy test kit?

You should wait to take a pregnancy test until the week after your missed period for the most accurate result. If you don’t want to wait until you’ve missed your period, you should wait at least one to two weeks after you had sex. If you are pregnant, your body needs time to develop detectable levels of HCG.

What is the latex agglutination test for cryptococcal antigen?

The Cryptococcal Antigen Latex Agglutination System is a qualitative and semi-quantitative test system for the detection of capsular polysaccharide antigens of Cryptococcus neoformans.

What is slide agglutination test used for?

Rapid slide agglutination tests (RSAT) have been used nowadays as a reliable screening test for the detection of acute and recent infections by many laboratories.