Smoothelin, IHC without Interpretation

Test Code
90229

CPT Codes
88342

Preferred Specimen
Formalin-fixed, paraffin-embedded tissue block

Other Acceptable Specimens
Minimum: 3 slides unstained, positively charged slides

Transport Container
IHC Specimen Transport Kit

Transport Temperature
Room temperature

Specimen Stability
Room temperature: Indefinitely
Refrigerated: Indefinitely
Frozen: Unacceptable

Methodology
Immunohistochemistry (IHC)

Setup Schedule
Set up: Mon-Fri a.m.; Report available: Next day

Clinical Significance
Smoothelin is a marker of the contractile smooth muscle
phenotype seen in blood vessels and the muscularis
propria. It can be used to identify vascular lesions as
well as muscularis invasion in bladder carcinoma.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153



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.