LOINCActiveBoth

LOINC Code 31159-7: Heparin anti Xa Qn (Nonbiological fluid)

31159-7 is a LOINC code used to identify Heparin anti Xa Qn (Nonbiological fluid) 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 Heparin anti Xa. It is commonly used with the system or sample type Flu.nonbiological.

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 Heparin anti Xa. It is commonly used with the system or sample type Flu.nonbiological.

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

  • Heparin anti Xa [Units/volume] in Nonbiological fluid
  • Heparin anti Xa
  • Arbitrary concentration; COAGULATION; Fld.NB; Hematology; Heme; Hep; Hepar; Heparn; Point in time; QNT; Quan; Quant; Quantitative; Random

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

Heparin anti Xa Qn (Nonbiological fluid)Heparin anti Xa [Units/volume] in Nonbiological fluidHeparin Anti Xa Fld.NB-aCncHeparin anti XaCOAGHeparin anti Xa, Nonbiological fluidACnc

Frequently asked questions

Code details

Code31159-7
SystemLOINC
Display nameHeparin anti Xa Qn (Nonbiological fluid)
DescriptionHeparin anti Xa
Short nameHeparin Anti Xa Fld.NB-aCnc
ComponentHeparin anti Xa
PropertyACnc
TimingPt
System (specimen)Flu.nonbiological
ScaleQn
ClassCOAG
Example unitsarb U/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.73

Consumer names

Heparin anti Xa, Nonbiological fluid

Part names

Heparin anti XaACncPtFlu.nonbiologicalQnArbitrary ConcentrationPoint in time (spot)Nonbiological fluid

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.