LOINCActiveBoth

LOINC Code 70265-4: Protein in pericardial fluid/Protein in serum (Pericard fld+S/P) [Relative ratio]

70265-4 is a LOINC code used to identify Protein in pericardial fluid/Protein in serum (Pericard fld+S/P) [Relative ratio] 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 Protein.pericard fld/Protein.serum. It is commonly used with the system or sample type Pericard fld+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 Protein.pericard fld/Protein.serum. It is commonly used with the system or sample type Pericard fld+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: Both

What it does not mean

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

Key facts

  • Protein in pericardial fluid/Protein in serum
  • Protein.pericard fld/Protein.serum
  • Total protein concentration is typically lower in pericardial fluid compared to serum. The ratio of total protein in pericardial fluid to serum is determined to differentiate exudate and transudate conditions.
  • Chemistry; Pcar; Pericard fld+SerPl; Pericardial Fluid; Pl; Plasma; Plsm; Point in time; PR; Prot; Prot Pcar; QNT; Quan; Quant; Quantitative; Random; Relative ratio; Ser; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Protein in pericardial fluid/Protein in serum (Pericard fld+S/P) [Relative ratio]Protein in pericardial fluid/Protein in serumProt Pcar/SerPlProtein.pericard fld/Protein.serumCHEMProtein in pericardial fluid/Protein in Serum, Pericardial Fluid+BloodRelRto

Frequently asked questions

Code details

Code70265-4
SystemLOINC
Display nameProtein in pericardial fluid/Protein in serum (Pericard fld+S/P) [Relative ratio]
DescriptionProtein.pericard fld/Protein.serum
Short nameProt Pcar/SerPl
ComponentProtein.pericard fld/Protein.serum
PropertyRelRto
TimingPt
System (specimen)Pericard fld+Ser/Plas
ScaleQn
ClassCHEM
Example unitsRatio
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.40
Last changed2.44

Consumer names

Protein in pericardial fluid/Protein in Serum, Pericardial Fluid+Blood

Part names

Protein.pericard fld/Protein.serumRelRtoPtPericard fld+Ser/PlasQnRelative RatioPoint in time (spot)Pericardial fluid and 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.