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 75645-2: Butabarbital Confirm (Bld) [Mass/Vol]

Name: LOINC Code 75645-2: Butabarbital Confirm (Bld) [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

75645-2 is a LOINC code used to identify Butabarbital Confirm (Bld) [Mass/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 Butabarbital. It is commonly used with the system or sample type Bld.

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 Butabarbital. It is commonly used with the system or sample type 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: Confirm

What it does not mean

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

Key facts

Butabarbital [Mass/volume] in Blood by Confirmatory method
Butabarbital
Addiction; Barbiturate; Blood; Butabarb; Butabarbitl; Butisol; Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; DRUG/TOXICOLOGY; Drugs; Drugs of abuse; GCMS; Illicit; LC/MS/MS; Level; Mass concentration; Point in time; PotentialForAbuse; QNT; Quan; Quant; Quantitative; Random; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Butabarbital Confirm (Bld) [Mass/Vol] (75645-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Butabarbital Confirm (Bld) [Mass/Vol]Butabarbital [Mass/volume] in Blood by Confirmatory methodButabarbital Bld Cfm-mCncButabarbitalDRUG/TOXButabarbital, BloodMCnc

Frequently asked questions

Code details

Code75645-2

SystemLOINC

Display nameButabarbital Confirm (Bld) [Mass/Vol]

DescriptionButabarbital

Short nameButabarbital Bld Cfm-mCnc

ComponentButabarbital

PropertyMCnc

TimingPt

System (specimen)Bld

ScaleQn

MethodConfirm

ClassDRUG/TOX

Example unitsug/mL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.50

Last changed2.73

Consumer names

Butabarbital, Blood

Part names

ButabarbitalMCncPtBldQnConfirmMass ConcentrationPoint in time (spot)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.