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LOINC Code 77959-5: Yellow fever virus ns5 gene NAA+non-probe Ql (CSF)

77959-5 is a LOINC code used to identify Yellow fever virus ns5 gene NAA+non-probe Ql (CSF) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Yellow fever virus ns5 gene. It is commonly used with the system or sample type CSF.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

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 Yellow fever virus ns5 gene. It is commonly used with the system or sample type CSF.

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: Non-probe.amp.tar

What it does not mean

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

Key facts

Yellow fever virus ns5 gene [Presence] in Cerebral spinal fluid by NAA with non-probe detection
Yellow fever virus ns5 gene
This assay comprises qRT-PCR targeting the ns5 gene in the yellow fever backbone followed by melt curve analysis, which identifies DNA fragments with different nucleotide compositions based on their unique melting temperature. [PMID18501437] CSF testing is indicated for suspected adverse neurological reactions to the vaccine against yellow fever. Genome detection of CSF yellow fever vaccine in this context is considered diagnostic. In suspected patients, detection of antibodies against yellow fever in CSF should also be requested.
3 Self-Sustaining Sequence Replication; 3SR SR; American plague; Amplif; Amplification; Amplified; Cerebral spinal fluid; Cerebrospinal Fl; DNA NUCLEIC ACID PROBE; DNA probe; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; NAA+n-prb; NAA+probe; NAAT; NASBA; Neuro; Neurology; Nucleic acid sequence based analysis; Ordinal; PCR; Point in time; Polymerase chain reaction; PR; Probe amp; Probe with ampification; Probe with target amplification; QBR; QL; Qual; Qualitative; Random; Screen; SDA; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; Strand Displacement Amplification; TMA; Transcription mediated amplification; yellow jack; YFV; YFV ns5 gene

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

Yellow fever virus ns5 gene NAA+non-probe Ql (CSF)Yellow fever virus ns5 gene [Presence] in Cerebral spinal fluid by NAA with non-probe detectionYFV ns5 gene CSF Ql NAA+n-prbYellow fever virus ns5 geneMICROYellow Fever virus Ns5 gene, Spinal fluidPrThr

Frequently asked questions

Code details

Code77959-5
SystemLOINC
Display nameYellow fever virus ns5 gene NAA+non-probe Ql (CSF)
DescriptionYellow fever virus ns5 gene
Short nameYFV ns5 gene CSF Ql NAA+n-prb
ComponentYellow fever virus ns5 gene
PropertyPrThr
TimingPt
System (specimen)CSF
ScaleOrd
MethodNon-probe.amp.tar
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.82

Consumer names

Yellow Fever virus Ns5 gene, Spinal fluid

Part names

Yellow fever virus ns5 genePrThrPtCSFOrdNon-probe.amp.tarPresence or ThresholdPoint in time (spot)Cerebral spinal fluidNucleic acid amplification with non-probe detection

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.