LOINC Code 98239-7: CD154 expression and function panel FC (T cells)

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 CD154 expression & function panel. It is commonly used with the system or sample type T cells.

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: Order
• Panel type: Panel
• Method: Flow cytometry

What it does not mean

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

Key facts

• CD154 expression and function panel - T cells by Flow cytometry (FC)
• CD154 expression & function panel
• The CD154 expression and function panel is intended to screen for X-linked hyper-IgM syndrome, which results from mutations causing decreased expression or function of CD154 (the CD40 ligand expressing on the surface of T cells). The test is usually performed in male patients younger than 10 years of age or ascertaining carrier status in females of child-bearing age.
• CD154 Expr+Func Pnl; CD40 ligand; CD40L; CELL MARKERS; Dynamic; FC; FCN; Func; Funct; gp39; gp39 Antigen, T Cell; gp39 Antigen, T-Cell; Pan; PANEL.CELLMARK; Panl; Pnl; Point in time; Random; T prime; T-BAM; T-Cell gp39 Antigen; TRAP; Tumor necrosis factor Related Activation Protein; X-linked hyper IgM

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