LOINC Code 51786-2: HIV 2 Ab Signal/Cutoff IA [Rel units/Vol]

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component HIV 2 Ab Signal/Cutoff. It is commonly used with the system or sample type Ser/Plas.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Observation
• Method: IA

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• HIV 2 Ab Signal/Cutoff in Serum or Plasma by Immunoassay
• HIV 2 Ab Signal/Cutoff
• Human Immunodeficiency Virus 2 (HIV2) Antibody Optical Density(OD) to Cutoff (CO) Ratio. Optical density values are providing and indication of the amount of color development during the testing procedure. Color development is proportionate to the antibody concentration in the specimen. A mathematical formula based on the negative controls multiplied by a factor produces a cutoff(CO) value to which the OD of the ptient sample is compared to determine the antibody status. Specimens with OD/CO values greater than 1.0 in an indirect ELISA method are considered positive.
• ABS; Aby; AIDS; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; co; cut off; EIA; ELFA; ELISA; Enzyme immunoassay; HIV type 2; HIV type II; HIV2 Ab s/co; Human immunodeficiency virus; IAA; ID; II; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; RlACnc; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions