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 59681-7: Gamma hydroxybutyrate Screen Ql

Name: LOINC Code 59681-7: Gamma hydroxybutyrate Screen Ql
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

59681-7 is a LOINC code used to identify Gamma hydroxybutyrate Screen Ql 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 Gamma hydroxybutyrate. It is commonly used with the system or sample type Ser/Plas.

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 Gamma hydroxybutyrate. 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: Screen

What it does not mean

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

Key facts

Gamma hydroxybutyrate [Presence] in Serum or Plasma by Screen method
Gamma hydroxybutyrate
4-hydroxybutyrate; 4-hydroxybutyric acid; DRUG/TOXICOLOGY; Drugs; Gamma hydroxy butyrate; Gamma-hydroxybutyrate; Gamma-OH; GBH; Georgia home boy; GHb; G-OH-Butyr; Goop; Hydroxybutyric acid; Liquidx; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Scn; Scr; Screen; Scrn; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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 Gamma hydroxybutyrate Screen Ql (59681-7)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Gamma hydroxybutyrate Screen QlGamma hydroxybutyrate [Presence] in Serum or Plasma by Screen methodG-OH-Butyr SerPl Ql ScnGamma hydroxybutyrateDRUG/TOXGamma hydroxybutyrate, BloodPrThr

Frequently asked questions

Code details

Code59681-7

SystemLOINC

Display nameGamma hydroxybutyrate Screen Ql

DescriptionGamma hydroxybutyrate

Short nameG-OH-Butyr SerPl Ql Scn

ComponentGamma hydroxybutyrate

PropertyPrThr

TimingPt

System (specimen)Ser/Plas

ScaleOrd

MethodScreen

ClassDRUG/TOX

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.32

Last changed2.73

Consumer names

Gamma hydroxybutyrate, Blood

Part names

Gamma hydroxybutyratePrThrPtSer/PlasOrdScreenPresence or ThresholdPoint in time (spot)Serum or PlasmaToxicology screen

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.