Yo Antibody Screen with Reflex to Titer and Western Blot

Test Code
YO ABS (90119)

Quest Code

CPT Codes

If Yo Antibody Screen, IFA is positive, Yo Antibody, Western Blot will be performed at an additional charge (CPT code(s): 84181).
If Yo Antibody, Western Blot is positive, Yo Antibody Titer will be performed at an additional charge (CPT code(s): 86256)

Preferred Specimen
0.5 mL serum

Patient Preparation
Overnight fasting is preferred

Minimum Volume
0.2 mL

Transport Temperature
Room temperature

Specimen Stability
Room temperature: 7 days
Refrigerated: 14 days
Frozen: 21 days

Immunofluorescence Assay (IFA)

Setup Schedule
Mon, Wed, Fri

Report Available
4 to 4 Day(s)

Reference Range
Yo Ab Screen, IFA Negative
  Yo Ab, Western Blot Negative
  Yo Ab Titer <1:40 Titer

Clinical Significance
Purkinje Cell (Yo) antibody is found in approximately half of the patients with paraneoplastic cerebellar degeneration and is associated with ovarian, uterine, and small cell lung carcinomas and Hodgkin’s lymphoma.

Performing Laboratory
Quest Diagnostics Nichols Institute
33608 Ortega Highway
San Juan Capistrano, CA 92675

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.