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LOINC Code 49429-4: Parvovirus B19 DNA NAA+probe (BM) [#/Vol]

49429-4 is a LOINC code used to identify Parvovirus B19 DNA NAA+probe (BM) [#/Vol] 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 Parvovirus B19 DNA. It is commonly used with the system or sample type Bone mar.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Parvovirus B19 DNA. It is commonly used with the system or sample type Bone mar.

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

  • Parvovirus B19 DNA [#/volume] (viral load) in Bone marrow by NAA with probe detection
  • Parvovirus B19 DNA
  • #; 3 Self-Sustaining Sequence Replication; 3SR SR; ABS; absolute; absolutes; Amplif; Amplification; Amplified; B19 virus; B19V; BM; BON; Bone marrow; Cnt; Count; Count/volume; CT; Deoxyribonucleic acid; DNA NUCLEIC ACID PROBE; DNA probe; Fifth Disease; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; MAR; Marrow (bone); Microbiology; minimal angle of resolution; Minimum angle of resolution; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Number concentration; Number Concentration (count/vol); Parvo; Parvo virus; Parvov; PCR; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; QNT; Quan; Quant; Quantitative; Random; SDA; Strand Displacement Amplification; TMA; Transcription mediated amplification; Viral load

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

Parvovirus B19 DNA NAA+probe (BM) [#/Vol]Parvovirus B19 DNA [#/volume] (viral load) in Bone marrow by NAA with probe detectionB19V DNA # Mar NAA+probeParvovirus B19 DNAMICROParvovirus B19, Bone marrowNCnc

Frequently asked questions

Code details

Code49429-4
SystemLOINC
Display nameParvovirus B19 DNA NAA+probe (BM) [#/Vol]
DescriptionParvovirus B19 DNA
Short nameB19V DNA # Mar NAA+probe
ComponentParvovirus B19 DNA
PropertyNCnc
TimingPt
System (specimen)Bone mar
ScaleQn
MethodProbe.amp.tar
ClassMICRO
Example unitscopies/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.70

Consumer names

Parvovirus B19, Bone marrow

Part names

Parvovirus B19 DNANCncPtBone marQnProbe.amp.tarNumber ConcentrationPoint in time (spot)Bone marrowNucleic acid amplification with 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.