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.

LOINCActiveObservation

LOINC Code 48012-9: Reference sequence Molgen Nom (Bld/Tiss)

Name: LOINC Code 48012-9: Reference sequence Molgen Nom (Bld/Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:32.262Z

48012-9 is a LOINC code used to identify Reference sequence Molgen Nom (Bld/Tiss) 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 Reference sequence. It is commonly used with the system or sample type Bld/Tiss.

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 Reference sequence. It is commonly used with the system or sample type Bld/Tiss.

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: Molgen

What it does not mean

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

Key facts

Reference sequence [Nucleotide sequence] in Blood or Tissue by Molecular genetics method Nominal

Reference sequence

A reference sequence carries the literal string that represents the DNA (or RNA) sequence that is the basis for deciding what is a different (a variation) in the study subject. The same information can also be reported more compactly by a reference sequence identifier [LOINC48013-7] if the reference sequence has been catalogued by a registration authority such as RefSeq at NCBI. Reference sequences can be quite long.

Blood; MISC; Miscellaneous molecular pathology; Molecular genetics; Molecular pathology; MOLPATH; Nominal; PCR; Point in time; Random; Ref Sequence; RefSeq; Tissue; Tissue, unspecified; WB; Whole blood; Whole blood or Tissue

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

Reference sequence Molgen Nom (Bld/Tiss)Reference sequence [Nucleotide sequence] in Blood or Tissue by Molecular genetics method NominalRef Sequence Seq Bld/TReference sequenceMOLPATH.MISCReference sequence, Blood or tissue specimenSeq

Frequently asked questions

Code details

Code48012-9

SystemLOINC

Display nameReference sequence Molgen Nom (Bld/Tiss)

DescriptionReference sequence

Short nameRef Sequence Seq Bld/T

ComponentReference sequence

PropertySeq

TimingPt

System (specimen)Bld/Tiss

ScaleNom

MethodMolgen

ClassMOLPATH.MISC

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.21

Last changed2.56

Consumer names

Reference sequence, Blood or tissue specimen

Part names

Reference sequenceSeqPtBld/TissNomMolgenNucleotide sequencePoint in time (spot)Blood or TissueMolecular genetics

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.