LOINC

LOINC Code 3554-3: Dibucaine number (S) [Mass/Vol]

3554-3 is a LOINC code used to identify Dibucaine number (S) [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 Dibucaine number. It is commonly used with the system or sample type Ser.

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 Dibucaine number. It is commonly used with the system or sample type Ser.

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: DEPRECATED

What it does not mean

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

Key facts

  • Deprecated Dibucaine number [mass/volume] in Serum or Plasma
  • Dibucaine number
  • Cholinesterase inhibition -- marker for inability to tolerate succinylcholine anesthesia
  • Chemistry; Chincocaine; Level; Mass concentration; No; Num; Nupercainal; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; 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.

Common synonyms

Dibucaine number (S) [Mass/Vol]Deprecated Dibucaine number [mass/volume] in Serum or PlasmaDeprecated Dibucaine Number Ser-mCncDibucaine numberCHEMDibucaine Number, BloodMCnc

Frequently asked questions

Code details

Code3554-3
SystemLOINC
Display nameDibucaine number (S) [Mass/Vol]
DescriptionDibucaine number
Short nameDeprecated Dibucaine Number Ser-mCnc
ComponentDibucaine number
PropertyMCnc
TimingPt
System (specimen)Ser
ScaleQn
ClassCHEM
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.40

Consumer names

Dibucaine Number, Blood

Part names

Dibucaine numberMCncPtSerQnMass ConcentrationPoint in time (spot)Serum

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 3554-3 | HealthAssure