LOINCActiveBoth

LOINC Code 90904-4: HIV 1 RNA PR sequence Nom (S/P/Bld)

90904-4 is a LOINC code used to identify HIV 1 RNA PR sequence Nom (S/P/Bld) 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 HIV 1 RNA protease gene. It is commonly used with the system or sample type Ser/Plas/Bld.

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 HIV 1 RNA protease gene. It is commonly used with the system or sample type Ser/Plas/Bld.

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: Sequencing

What it does not mean

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

Key facts

  • HIV 1 RNA protease gene [Nucleotide sequence] in Serum, Plasma or Blood by Sequencing
  • HIV 1 RNA protease gene
  • This term is used to report the nucleotide sequence of the HIV-1 protease gene based on viral RNA. The specific regions that are sequenced and reporting format may vary by laboratory and local reporting requirements.
  • AIDS; Blood; high-throughput sequencing; HIV type 1; HIV type I; HIV1; HTS; Human immunodeficiency virus; i; ID; Infectious Disease; InfectiousDisease; Microbiology; Next generation sequencing; NGS; Nominal; Pl; PlasBld; Plasma; Plsm; Point in time; PR; Random; Ribonucleic acid; SerP; SerPl; SerPlas; SerPlBld; Serum; Serum or plasma; Serum, plasma or whole blood; SR; WB; Whole blood

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

HIV 1 RNA PR sequence Nom (S/P/Bld)HIV 1 RNA protease gene [Nucleotide sequence] in Serum, Plasma or Blood by SequencingHIV 1 RNA PR SerPlBld-SeqHIV 1 RNA protease geneMICROHIV 1 RNA PR, BloodSeq

Frequently asked questions

Code details

Code90904-4
SystemLOINC
Display nameHIV 1 RNA PR sequence Nom (S/P/Bld)
DescriptionHIV 1 RNA protease gene
Short nameHIV 1 RNA PR SerPlBld-Seq
ComponentHIV 1 RNA protease gene
PropertySeq
TimingPt
System (specimen)Ser/Plas/Bld
ScaleNom
MethodSequencing
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.65
Last changed2.65

Consumer names

HIV 1 RNA PR, Blood

Part names

HIV 1 RNA protease geneSeqPtSer/Plas/BldNomSequencingNucleotide sequencePoint in time (spot)Serum, Plasma or Blood

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.

LOINC Code 90904-4 | HealthAssure