LOINC
Version 2.71

12841-3Prostate Specific Ag Free/Prostate specific Ag.total in Serum or PlasmaActive

Part Descriptions

LP18192-2   Prostate specific Ag.free
Most PSA in the blood is bound to serum proteins. A small amount is not protein bound and is called free PSA. In men with prostate cancer the ratio of free (unbound) PSA to total PSA is decreased. The risk of cancer increases if the free to total ratio is less than 25%. The lower the ratio the greater the probability of prostate cancer. Measuring the ratio of free to total PSA appears to be particularly promising for eliminating unnecessary biopsies in men with PSA levels between 4 and 10 ng/mL. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Prostate Specific Ag Free

LP32140-3   Prostate specific Ag.total
The total prostate specific Ag (PSA) is equal to the free PSA plus the protein-bound PSA.
(Total PSA Antigen = free PSA + protein-bound PSA) Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia

Fully-Specified Name

Component
Prostate specific Ag.free/Prostate specific Ag.total
Property
MFr
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Short Name
PSA Free MFr SerPl
Display Name
Free PSA/Total PSA [Mass fraction]
Consumer Name Alpha
Free PSA/Total Prostate Specific Antigen (Total PSA), Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0j-a
Last Updated
Version 2.70
Change Reason
Corrected typo in Consumer Name
Order vs. Observation
Observation
Common US Lab Results Rank
532
Common SI Lab Results Rank
532

Member of these Panels

LOINC Long Common Name
75868-0 HEDIS 2015 Value Sets
79544-3 HEDIS 2016 Value Sets
82955-6 HEDIS 2017 Value Sets
87625-0 HEDIS 2018 Value Sets
90766-7 HEDIS 2019 Value Sets
94137-7 HEDIS 2020 Value Sets
96068-2 HEDIS MY 2020 Value Sets
53764-7 Prostate specific Ag panel - Serum or Plasma

Member of these Groups

LG2277-4 Prostate specific Ag.free/Prostate specific Ag.total|MFr|Pt|ANYBldSerPl

Language Variants Get Info

zh-CNChinese (China)
前列腺特异性抗原.游离型/前列腺特异性抗原.总计:质量分数:时间点:血清/血浆:定量型:
nl-NLDutch (Netherlands)
prostaatspecifiek Ag.vrij/prostaatspecifiek Ag.totaal:massafractie:moment:serum of plasma:kwantitatief:
et-EEEstonian (Estonia)
Prostataspetsiifiline antigeen.vaba/prostataspetsiifiline antigeen.üld:MFr:Pt:S/P:Qn:
fr-BEFrench (Belgium)
Ag prostatique spécifique.libre/Ag prostatique spécifique.totale:Fraction de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-CAFrench (Canada)
Ag prostatique spécifique.libre/Ag prostatique spécifique.totale:Fraction de masse:Temps ponctuel:Sérum/Plasma:Quantitatif:
fr-FRFrench (France)
Prostate spécifique antigène libre/total:Fraction massique:Ponctuel:Sérum/Plasma:Numérique:
it-ITItalian (Italy)
Prostatico specifico, Ag.libero/Prostatico specifico, Ag.totale:MFr:Pt:Siero/Plasma:Qn:
ko-KRKorean (Korea, Republic of)
유리 전립선 특이 항원/총 전립선 특이 항원:질량분획:검사시점:혈청/혈장:정량:
pt-BRPortuguese (Brazil)
Prostático Específico Ag.livre/Prostático Específico Ag.total:MFr:Pt:Sor/Plas:Qn:
ru-RURussian (Russian Federation)
Простат специфический Аг.свободный/Простат специфический Аг.общий:МассДол:ТчкВрм:Сыв/Плаз:Колич:
es-ARSpanish (Argentina)
[antígeno] prostático específico [Ag].libre/[antígeno] prostático específico [Ag].total:fracción de masa:punto en el tiempo:suero/plasma:cuantitativo:
es-ESSpanish (Spain)
Antígeno prostático específico libre/Antígeno prostático especifico total:Fracción de masa:Punto temporal:Suero o Plasma:Qn:
tr-TRTurkish (Turkey)
Prostat spesifik Ag.serb/Prostat spesifik Ag.total:KütlFr:Zmlı:Ser/Plaz:Kant:

Example Units

Unit Source
% eCHN
% Example UCUM Units
% REGENSTRIEF

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=12841-3