LOINC Code 77666-6: Methicillin resistance mecA mRNA FISH Ql (Pos bld culture)

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 Bacterial methicillin resistance mecA mRNA. It is commonly used with the system or sample type Bld.pos growth.

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: FISH

What it does not mean

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

Key facts

• Methicillin resistance mecA mRNA [Presence] by FISH in Positive blood culture
• Bacterial methicillin resistance mecA mRNA
• This term was created for, but is not limited in use to, the AdvanDx mecA XpressFISH® assay, which is intended for the detection of mecA mRNA on smears from blood cultures found to be solely positive for Staphylococcus aureus by the Staphylococcus QuickFISH BC assay. Detection of mecA mRNA implies the presence of methicillin-resistant Staph aureus (MRSA), and absence of mecA mRNA implies the presence of methicillin-susceptible Staph aureus (MSSA).
• ANTIBIOTIC SUSCEPTIBILITIES; Bact; Bld Pos; Blood; Celbenin; Dimethoxypenicillin; Fluorescent in situ hybridization; ID; Infectious Disease; InfectiousDisease; Metacillin; Metin; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Resist; Resistanc; Resistant; Resistent; Screen; Staficyn; Staphicillin; WB; Whole blood

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