LOINCActiveBoth

LOINC Code 53717-5: PCA-1 Ab (S) [Titer]

53717-5 is a LOINC code used to identify PCA-1 Ab (S) [Titer] 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 Purkinje cell cytoplasmic type 1 Ab. It is commonly used with the system or sample type Ser.

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 Purkinje cell cytoplasmic type 1 Ab. It is commonly used with the system or sample type Ser.

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

PCA-1 Ab [Titer] in Serum
Purkinje cell cytoplasmic type 1 Ab
PCA-1 antibody is rarely found in patients with neurologic diseases without breast or gynecologic cancer. Conversely, it is rarely found in patients with breast or gynecologic cancer without neurologic dysfunction. Paraneoplastic cerebellar degeneration is associated with breast or gynecological (ovarian, fallopian, endometrial) tumors, and less commonly with lung (SCLC -small cell lung cancer) or Hodgkin lymphoma. More than 50% of seropositive patients present with subacute cerbellar ataxia and approximately 5% with sensorimotor or motor neuropathy. Information from http//www.clinlabnavigator.com accessed 2008 14 02.
ABS; Aby; Antby; Anti; Antibodies; Antibody; Anti-Yo-Associated Paraneoplastic Cerebellar Degeneration; Autoantibodies; Autoantibody; Cytopl; Cytoplas; Dilution factor; Dilution Factor (Titer); i; Paraneoplastic syndrome; PCA1; PCA-1; PCCA-1; Point in time; Purkinje cell cytoplasmic antibody; Purkinje cells; Random; Serology; Serum; SmQn; SR; Titer; Titered; Titre; Ttr; Yo Ab

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

PCA-1 Ab (S) [Titer]PCA-1 Ab [Titer] in SerumPCA-1 Ab Titr SerPurkinje cell cytoplasmic type 1 AbSEROPCA-1 antibody, BloodTitr

Frequently asked questions

Code details

Code53717-5
SystemLOINC
Display namePCA-1 Ab (S) [Titer]
DescriptionPurkinje cell cytoplasmic type 1 Ab
Short namePCA-1 Ab Titr Ser
ComponentPurkinje cell cytoplasmic type 1 Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassSERO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.26
Last changed2.75

Consumer names

PCA-1 antibody, Blood

Part names

Purkinje cell cytoplasmic type 1 AbTitrPtSerSemiQnPCA-1 AbTiterPoint in time (spot)Serum

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.

LOINC Code 53717-5 | HealthAssure