LOINC Code 93802-7: 19q chromosome del/19p chromosome del FISH (Tiss) [# ratio]

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 19q chromosome deletion/19p chromosome deletion. 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: Observation
• Method: FISH

What it does not mean

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

Key facts

• 19q/19p chromosome deletion [# Ratio] in Tissue by FISH
• 19q chromosome deletion/19p chromosome deletion
• The ratio of chromosome 19q arm deletions to chromosome 19p arm deletions. Results are used to diagnose oligodendroglioma brain tumors and to determine best treatment options. Tumors with 19q/19p ratio <0.80 and ≥26% deleted cells are deemed deleted for 19q.
• 19p Del; Chromosom; Chromosomes; Del; Deletions; Fluorescent in situ hybridization; Molecular pathology; MOLPATH; MOLPATH.DELDUP; Number ratio; Point in time; QNT; Quan; Quant; Quantitative; Random; 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