LOINCActiveObservation

LOINC Code 2796-1: Phosphofructokinase M subunit/Total phosphofructokinase (RBC) [Catalytic fraction]

2796-1 is a LOINC code used to identify Phosphofructokinase M subunit/Total phosphofructokinase (RBC) [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 Phosphofructokinase.M subunit/Phosphofructokinase.total. It is commonly used with the system or sample type RBC.

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 Phosphofructokinase.M subunit/Phosphofructokinase.total. It is commonly used with the system or sample type RBC.

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

What it does not mean

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

Key facts

  • Phosphofructokinase M subunit/Phosphofructokinase.total in Red Blood Cells
  • Phosphofructokinase.M subunit/Phosphofructokinase.total
  • NFR is probably not the right property. These are probably not being tested as fractions of total phosphofructokinase.
  • 6-phosphofructokinase; Catalytic Fraction; Chemistry; Erythrocytes; Percent; PFK; PFK M; PFK-M; PFK-muscle; Phosphohexokinase; Point in time; QNT; Quan; Quant; Quantitative; Random; Red blood cells; Red blood corpusles; 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

Phosphofructokinase M subunit/Total phosphofructokinase (RBC) [Catalytic fraction]Phosphofructokinase M subunit/Phosphofructokinase.total in Red Blood CellsPFK-M CFr RBCPhosphofructokinase.M subunit/Phosphofructokinase.totalCHEMPhosphofructokinase M Subunit/Phosphofructokinase.total, Red blood cellsCFr

Frequently asked questions

Code details

Code2796-1
SystemLOINC
Display namePhosphofructokinase M subunit/Total phosphofructokinase (RBC) [Catalytic fraction]
DescriptionPhosphofructokinase.M subunit/Phosphofructokinase.total
Short namePFK-M CFr RBC
ComponentPhosphofructokinase.M subunit/Phosphofructokinase.total
PropertyCFr
TimingPt
System (specimen)RBC
ScaleQn
ClassCHEM
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.70

Consumer names

Phosphofructokinase M Subunit/Phosphofructokinase.total, Red blood cells

Part names

Phosphofructokinase.M subunit/Phosphofructokinase.totalCFrPtRBCQnCatalytic FractionPoint in time (spot)Red Blood Cells

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.