LOINC Code 74857-4: West Nile virus RNA NAA+probe Ql (S/P donor)

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 West Nile Virus RNA. It is commonly used with the system or sample type Ser/Plas^Donor.

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: Probe.amp.tar

What it does not mean

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

Key facts

• West Nile virus RNA [Presence] in Serum or Plasma from Donor by NAA with probe detection
• West Nile Virus RNA
• A qualitative in vitro nucleic acid screening test for the direct detection of West Nile Virus (WNV) RNA in human plasma. This test screens donor samples for west nile virus RNA in plasma from individual human donors, including donors of whole blood, blood components and other living donors. This test also screens organ and tissue donors when donor samples are obtained while the donor's heart is still beating, and in testing cadaveric (non-heart-beating) donors. Not intended for use on samples of cord blood. Plasma from all donors may be screened as individual specimens. For donations of whole blood and blood components, plasma samples may be tested individually or in pools comprised of not more than six individual samples. For donations from cadaveric (non-heart-beating) organ and tissue donors, samples may only be screened as individual specimens. Not intended for use in the diagnosis of infection with WNV. This term was based on, but not limited in use to, the cobas West Nile Virus RNA assay.
• 3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; DNA NUCLEIC ACID PROBE; DNA probe; Donr; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Ordinal; PCR; Pl; Plasma; Plsm; Point in time; Polymerase chain reaction; PR; Probe amp; Probe with ampification; Probe with target amplification; QBR; QL; Qual; Qualitative; Random; Ribonucleic acid; Screen; SDA; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Strand Displacement Amplification; TMA; Transcription mediated amplification; WNV

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