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LOINC Code 75543-9: Parvovirus B19 DNA NAA+probe Ql (P donor)

75543-9 is a LOINC code used to identify Parvovirus B19 DNA NAA+probe Ql (P donor) 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 Plas^Donor.

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 Parvovirus B19 DNA. It is commonly used with the system or sample type 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: Observation
  • 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 [Presence] in Plasma from Donor by NAA with probe detection
  • Parvovirus B19 DNA
  • Interpretation of the parvovirus B19 DNA (Genotypes 1-3) quantitative result, which is used to test human donor plasma, either from whole blood (recovered plasma) or collected by apheresis, prior to further manufacture. Plasma may be tested as individual specimens or in pools. Not intended for use on samples of cord blood or as an aid in diagnosis. This term was created for, but is not limited in use to, the cobas TaqScreen DPX test kit.
  • 3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; B19 virus; B19V; Deoxyribonucleic acid; DNA NUCLEIC ACID PROBE; DNA probe; Donr; Fifth Disease; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; Ordinal; Parvo; Parvo virus; Parvov; 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; Screen; SDA; Strand Displacement Amplification; TMA; Transcription mediated amplification

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 Ql (P donor)Parvovirus B19 DNA [Presence] in Plasma from Donor by NAA with probe detectionB19V DNA Plas Donr Ql NAA+probeParvovirus B19 DNAMICROParvovirus B19, Donor BloodPrThr

Frequently asked questions

Code details

Code75543-9
SystemLOINC
Display nameParvovirus B19 DNA NAA+probe Ql (P donor)
DescriptionParvovirus B19 DNA
Short nameB19V DNA Plas Donr Ql NAA+probe
ComponentParvovirus B19 DNA
PropertyPrThr
TimingPt
System (specimen)Plas^Donor
ScaleOrd
MethodProbe.amp.tar
ClassMICRO
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.50
Last changed2.63

Consumer names

Parvovirus B19, Donor Blood

Part names

Parvovirus B19 DNAPrThrPtPlas^DonorOrdProbe.amp.tarPresence or ThresholdPoint in time (spot)Plasma^DonorNucleic 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.