What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveBoth

LOINC Code 85512-2: HDV RNA NAA+probe Qn

Name: LOINC Code 85512-2: HDV RNA NAA+probe Qn
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:13.315Z

85512-2 is a LOINC code used to identify HDV RNA NAA+probe Qn 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 Hepatitis D virus RNA. It is commonly used with the system or sample type Ser/Plas.

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 Hepatitis D virus RNA. It is commonly used with the system or sample type Ser/Plas.

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

Hepatitis D virus RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detection

Hepatitis D virus RNA

HDV screening of all Chronic Hepatitis B (CHB) patients is recommended and HDV viral load (HDVL) detection and measurement should be considered whether or not the patients already have antibodies to HDV. In CHB patients, HDV can occur as a co-infection or superinfection and the course of the disease may be accelerated. [PMID24293018] This term was created for, but is not limited in use to, ARUP Laboratories' Hepatitis Delta Virus Quantitative Real Time RT-PCR assay. The viral load is reported in IU/mL. The IU conversion factor, as determined by validation, is 1 IU/mL = 138 copies/mL.

3 Self-Sustaining Sequence Replication; 3SR SR; Amplif; Amplification; Amplified; Arbitrary concentration; Delta hepatitis; Dextro; DNA NUCLEIC ACID PROBE; DNA probe; HDV; Hep; Hep D; Hep Delta; Hepatis; Hepatit; Hepatitis delta virus; Hepatology; ID; Infectious Disease; InfectiousDisease; LAT; LCR; Ligase chain reaction; Ligation-activated transcription; Liver; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; PCR; Pl; Plasma; Plsm; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; QNT; Quan; Quant; Quantitative; Random; Ribonucleic acid; SDA; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; 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

HDV RNA NAA+probe QnHepatitis D virus RNA [Units/volume] (viral load) in Serum or Plasma by NAA with probe detectionHDV RNA SerPl NAA+probe-aCncHepatitis D virus RNAMICROHDV, BloodACnc

Frequently asked questions

Code details

Code85512-2

SystemLOINC

Display nameHDV RNA NAA+probe Qn

DescriptionHepatitis D virus RNA

Short nameHDV RNA SerPl NAA+probe-aCnc

ComponentHepatitis D virus RNA

PropertyACnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodProbe.amp.tar

ClassMICRO

Example unitsIU/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.61

Last changed2.78

Consumer names

HDV, Blood

Part names

Hepatitis D virus RNAACncPtSer/PlasQnProbe.amp.tarArbitrary ConcentrationPoint in time (spot)Serum or PlasmaNucleic 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.