Get in touch
Our Client Services team is on hand to help. Please call us at 866.776.5907, Option 3.
ALK-1 , (For heme cases)
- Immunohistochemistry (IHC)
This test uses immunohistochemistry (IHC) to stain for ALK1 (ALK1 cline). ALK1 identifies normal human ALK protein expression and the NPM-ALK chimeric protein and is a useful tool for the identification of a subgroup of anaplastic large-cell lymphoma (ALCL) that are ALK positive.
Specimen Requirements
Cut Slides: H&E slide (required) plus 2-3 unstained slides cut at 4-5 microns for each IHC test ordered.
Note on FFPE: Paraffin block is preferred. Do not use zinc fixatives. If submitting slides, please use positively-charged slides and 10% NBF fixative. Block and slide identifiers should be clearly written and match exactly with the specimen ID and specimen labeling as noted on the requisition.
Storage and Transportation
Use cold pack for transport, making sure cold pack is not in direct contact with specimen. Slides can be packed at room temperature. NYS clients please provide date and time of Collection.
CPT Code(s)*
88342 x 1 or 88341 x 1
*The CPT codes provided with our test descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.
Last Updated: August 05, 2025