LOINCActiveBoth

LOINC Code 70267-0: Protein in peritoneal fluid/Protein in serum (Periton fld+S/P) [Relative ratio]

70267-0 is a LOINC code used to identify Protein in peritoneal fluid/Protein in serum (Periton 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.periton fld/Protein.serum. It is commonly used with the system or sample type Periton 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.periton fld/Protein.serum. It is commonly used with the system or sample type Periton 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 peritoneal fluid/Protein in serum
  • Protein.periton fld/Protein.serum
  • Total protein concentration is typically lower in peritoneal fluid compared to serum. The ratio of total protein in peritoneal fluid to serum is determined to help diagnose the cause of peritonitis and/or ascites (cirrohotic vs. malignant).
  • Ascites; Ascitic fluid; Ascitis; Chemistry; Periton fld+SerPl; Peritoneal fluid; Pl; Plasma; Plsm; Point in time; PR; Prot; Prot Prt; Prt; 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 peritoneal fluid/Protein in serum (Periton fld+S/P) [Relative ratio]Protein in peritoneal fluid/Protein in serumProt Prt/SerPlProtein.periton fld/Protein.serumCHEMProtein in peritoneal fluid/Protein in Serum, Peritoneal Fluid+BloodRelRto

Frequently asked questions

Code details

Code70267-0
SystemLOINC
Display nameProtein in peritoneal fluid/Protein in serum (Periton fld+S/P) [Relative ratio]
DescriptionProtein.periton fld/Protein.serum
Short nameProt Prt/SerPl
ComponentProtein.periton fld/Protein.serum
PropertyRelRto
TimingPt
System (specimen)Periton 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 peritoneal fluid/Protein in Serum, Peritoneal Fluid+Blood

Part names

Protein.periton fld/Protein.serumRelRtoPtPeriton fld+Ser/PlasQnRelative RatioPoint in time (spot)Peritoneal 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.