LOINCActiveObservation

LOINC Code 43382-1: ALP heat stable Heat stability [Catalytic fraction]

43382-1 is a LOINC code used to identify ALP heat stable Heat stability [Catalytic fraction] 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 Alkaline phosphatase.heat stable/Alkaline phosphatase.total. It is commonly used with the system or sample type Ser/Plas.

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 Alkaline phosphatase.heat stable/Alkaline phosphatase.total. 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: Observation
  • Method: Heat stability

What it does not mean

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

Key facts

  • Alkaline phosphatase.heat stable/Alkaline phosphatase.total in Serum or Plasma by Heat stability
  • Alkaline phosphatase.heat stable/Alkaline phosphatase.total
  • Alk; Alk phos; Alkaline phos; Alkaline phosphatase.total; ALKP; ALP; ALP heat stable; AP; Catalytic Fraction; Chemistry; Hepatology; HS; Liver; Percent; Phos; Phosphtase; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Tot; Totl

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

ALP heat stable Heat stability [Catalytic fraction]Alkaline phosphatase.heat stable/Alkaline phosphatase.total in Serum or Plasma by Heat stabilityALP heat stable CFr SerPl HSAlkaline phosphatase.heat stable/Alkaline phosphatase.totalCHEMHeat stable alkaline phosphatase, BloodCFr

Frequently asked questions

Code details

Code43382-1
SystemLOINC
Display nameALP heat stable Heat stability [Catalytic fraction]
DescriptionAlkaline phosphatase.heat stable/Alkaline phosphatase.total
Short nameALP heat stable CFr SerPl HS
ComponentAlkaline phosphatase.heat stable/Alkaline phosphatase.total
PropertyCFr
TimingPt
System (specimen)Ser/Plas
ScaleQn
MethodHeat stability
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.73

Consumer names

Heat stable alkaline phosphatase, Blood

Part names

Alkaline phosphatase.heat stable/Alkaline phosphatase.totalCFrPtSer/PlasQnHeat stabilityCatalytic FractionPoint in time (spot)Serum or Plasma

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.