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 18251-9: Polychlorinated biphenyl (PCB) Ql (Tiss)

Name: LOINC Code 18251-9: Polychlorinated biphenyl (PCB) Ql (Tiss)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

18251-9 is a LOINC code used to identify Polychlorinated biphenyl (PCB) Ql (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 Polychlorinated biphenyl. It is commonly used with the system or sample type Tiss.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Polychlorinated biphenyl. It is commonly used with the system or sample type 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: Both

What it does not mean

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

Key facts

Polychlorinated biphenyl (PCB) [Presence] in Tissue
Polychlorinated biphenyl
1,1'-Biphenyl; Bibenzene; Biphenyls; Diphenyl; DRUG/TOXICOLOGY; Drugs; Lemonene; Ordinal; PCB; PCBs; Phenylbenzene; Point in time; Polychlorinated biphenyls; PR; QL; Qual; Qualitative; Random; Screen; Tetrosin LY; Tissue; Tissue, unspecified

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Polychlorinated biphenyl (PCB) Ql (Tiss) (18251-9)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Polychlorinated biphenyl (PCB) Ql (Tiss)Polychlorinated biphenyl (PCB) [Presence] in TissuePCB Tiss QlPolychlorinated biphenylDRUG/TOXPolychlorinated Biphenyl (PCB), TissuePrThr

Frequently asked questions

Code details

Code18251-9

SystemLOINC

Display namePolychlorinated biphenyl (PCB) Ql (Tiss)

DescriptionPolychlorinated biphenyl

Short namePCB Tiss Ql

ComponentPolychlorinated biphenyl

PropertyPrThr

TimingPt

System (specimen)Tiss

ScaleOrd

ClassDRUG/TOX

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.56

Consumer names

Polychlorinated Biphenyl (PCB), Tissue

Part names

Polychlorinated biphenylPrThrPtTissOrdPolychlorinated biphenyl (PCB)Presence or ThresholdPoint in time (spot)Tissue and Smears

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.