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LOINC Code 85513-0: HDV RNA NAA+probe (S) [Log units/Vol]

85513-0 is a LOINC code used to identify HDV RNA NAA+probe (S) [Log units/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 Hepatitis D virus RNA. It is commonly used with the system or sample type Ser.

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.

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 [log units/volume] (viral load) in Serum 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; 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; Log ACNC; Log IU; Microbiology; NAA+probe; NAAT; NASBA; Nucleic acid sequence based analysis; PCR; Point in time; Polymerase chain reaction; Probe amp; Probe with ampification; Probe with target amplification; QBR; QNT; Quan; Quant; Quantitative; Random; Ribonucleic acid; SDA; Serum; 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 (S) [Log units/Vol]Hepatitis D virus RNA [log units/volume] (viral load) in Serum by NAA with probe detectionHDV RNA Ser NAA+probe-Log IUHepatitis D virus RNAMICROHDV, BloodLaCnc

Frequently asked questions

Code details

Code85513-0
SystemLOINC
Display nameHDV RNA NAA+probe (S) [Log units/Vol]
DescriptionHepatitis D virus RNA
Short nameHDV RNA Ser NAA+probe-Log IU
ComponentHepatitis D virus RNA
PropertyLaCnc
TimingPt
System (specimen)Ser
ScaleQn
MethodProbe.amp.tar
ClassMICRO
Example unitslog IU/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.61
Last changed2.63

Consumer names

HDV, Blood

Part names

Hepatitis D virus RNALaCncPtSerQnProbe.amp.tarLog unit concentrationPoint in time (spot)SerumNucleic 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.