LOINC Code 6551-6: S. agalactiae Ag IF Ql (Throat)

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 Streptococcus agalactiae Ag. It is commonly used with the system or sample type Thrt.

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: Both
• Method: IF

What it does not mean

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

Key facts

• Streptococcus agalactiae Ag [Presence] in Throat by Immunofluorescence
• Streptococcus agalactiae Ag
• ACIF; Anticomplement Immunofluorescence; Antigen; Antigens; DFA; FA; Fluorescent antibody; Fluoresent; GBS; Gp B Strep; Group B; Group B Strep; ID; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Infectious Disease; InfectiousDisease; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; S agalactiae; Screen; Steptococcus Group B; Strep; Strep B; Strep group B; Strept; Streptococci group B; Throat; Time Resolved Fluorescence; TRF; UniversalLabOrders; Upper respiratory

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.

Related SNOMED CT concepts

Related observations and tests

Common synonyms

Frequently asked questions