LOINCActiveBoth

LOINC Code 55731-4: Inject Rh immune globulin (Dose) [Mass]

55731-4 is a LOINC code used to identify Inject Rh immune globulin (Dose) [Mass] 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 Inject Rh immune globulin. It is commonly used with the system or sample type Dose.

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 Inject Rh immune globulin. It is commonly used with the system or sample type Dose.

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

  • Inject Rh immune globulin [Mass]
  • Inject Rh immune globulin
  • The amount of IM RhIg (anti-RhD immunoglobulin) required to avoid sensitization is 10 ug for each mL of feto-maternal hemorrhage.
  • BLOOD BANK; D phenotyping; D typing; Dose med or substance; GLB; Glob; Glob%; Globul; Globulins; Imm; Imun; Imune; Inject Rh Ig; Point in time; QNT; Quan; Quant; Quantitative; Random; Rh Ig; Rh phenotyping; Rh typing; RHIG; RhoGAM

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

Inject Rh immune globulin (Dose) [Mass]Inject Rh immune globulin [Mass]Inject Rh Ig Dose QnInject Rh immune globulinBLDBKInject rh immune globulin doseMass

Frequently asked questions

Code details

Code55731-4
SystemLOINC
Display nameInject Rh immune globulin (Dose) [Mass]
DescriptionInject Rh immune globulin
Short nameInject Rh Ig Dose Qn
ComponentInject Rh immune globulin
PropertyMass
TimingPt
System (specimen)Dose
ScaleQn
ClassBLDBK
Example unitsug
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.27
Last changed2.73

Consumer names

Inject rh immune globulin dose

Part names

Inject Rh immune globulinMassPtDoseQnPoint in time (spot)

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 55731-4 | HealthAssure