LOINCActiveBoth

LOINC Code 46430-5: Alpha 1 antitrypsin (48 hour Stl) [Mass/Mass]

46430-5 is a LOINC code used to identify Alpha 1 antitrypsin (48 hour Stl) [Mass/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 Alpha 1 antitrypsin. It is commonly used with the system or sample type Stool.

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 Alpha 1 antitrypsin. It is commonly used with the system or sample type Stool.

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

  • Alpha 1 antitrypsin [Mass/mass] in 48 hour Stool
  • Alpha 1 antitrypsin
  • 2 days; 2D; 48 hours; 48HR; A1; A1A; A1AT; A-1-AT; A1-AT; AAT; Alfa; Alpha-1-antitrypsin.total; Alpha-1-protease inhibitor; Alpha-1-proteinase inhibitor; Alpha-1-trypsin inhibitor; Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Gastro; Gastroenterology; GI; Hepatology; i; Liver; Lung; Mass Content; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Respiratory; Stl; Stool = Fecal

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

Alpha 1 antitrypsin (48 hour Stl) [Mass/Mass]Alpha 1 antitrypsin [Mass/mass] in 48 hour StoolA1AT 48h Stl-mCntAlpha 1 antitrypsinCHEMAlpha 1 antitrypsin, StoolMCnt

Frequently asked questions

Code details

Code46430-5
SystemLOINC
Display nameAlpha 1 antitrypsin (48 hour Stl) [Mass/Mass]
DescriptionAlpha 1 antitrypsin
Short nameA1AT 48h Stl-mCnt
ComponentAlpha 1 antitrypsin
PropertyMCnt
Timing48H
System (specimen)Stool
ScaleQn
ClassCHEM
Example unitsmg/g
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.42

Consumer names

Alpha 1 antitrypsin, Stool

Part names

Alpha 1 antitrypsinMCnt48HStoolQnMass Content48 hours

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 46430-5 | HealthAssure