LOINC Code 74489-6: Melan-A and Ki-67 Ag Immune stain Nom (Tiss)

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 Melan-A & Ki67 Ag. It is commonly used with the system or sample type Tiss.

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
• Method: Immune stain

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Melan-A and Ki-67 Ag [Identifier] in Tissue by Immune stain
• Melan-A & Ki67 Ag
• Double stain (Melan-A/Ki67) useful in distinguishing malignant melanoma from benign melanocytic proliferation.
• Antigen; Antigens; Identity or presence; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; MART-1; Melan-A+Ki-67; Nominal; Pathology; Point in time; Random; St; Stains; Stn; Tissue; Tissue, unspecified

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

Frequently asked questions