Version 2.77

Description

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

Reference Information

Type Source Reference
Article NCBI PubMed Balk SP, Ko YJ, Bubley GJ. Biology of prostate-specific antigen. J Clin Oncol. 2003 Jan 15;21(2):383-91. PubMed PMID: 12525533. Link to PubMed

Basic Part Properties

Part Display Name
Prostate Specific Ag Free
Part Type
Component (Describes the core component or analyte measured)
Created On
2000-05-04
Construct for LOINC Short Name
PSA Free

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=LP18192-2

Language Variants Get Info

Tag Language Translation
zh-CN Chinese (China) 前列腺特异性抗原.游离型
Synonyms: fPSA;PSA Free;PSA.游离;PSA.游离型;前列腺特异性抗原.游离;前列腺特异抗原.游离;前列腺特异抗原.游离型;游离 PSA;游离前列腺特异性抗原;游离前列腺特异抗原;游离型 PSA;游离型前列腺特异性抗原;游离型前列腺特异抗原
fr-CA French (Canada) Ag prostatique spécifique.libre
et-EE Estonian (Estonia) Prostataspetsiifiline antigeen.vaba
es-ES Spanish (Spain) Antígeno prostático específico libre
it-IT Italian (Italy) Prostatico specifico, Ag.libero
Synonyms: Ag prostatico specifico libero
tr-TR Turkish (Turkey) Prostat spesifik Ag.serb
ru-RU Russian (Russian Federation) Простат специфический Аг.свободный
nl-NL Dutch (Netherlands) prostaatspecifiek Ag.vrij
fr-BE French (Belgium) Ag prostatique spécifique.libre
Synonyms: PSA libre, fPSA
pl-PL Polish (Poland) Swoisty antygen sterczowy, wolny