93804-3
LaboratoryChromosome 12 copy number/nucleus in Tissue by FISH
Definition
Aneusomy (varying number) of chromosome 12 is evaluated by using a DNA probe that marks the centromeric region of chromosome 12. Such a probe is also called CEP12. The ratio of the number of signals of the MDM2 gene, also on chromosome 12, to the chromosome 12 signal [LOINC: 93809-2] can indicate whether or not there is amplification of the MDM2 gene.
LOINC 6-Axis Classification
Component
Chromosome 12 copy number/nucleus
Property
EntNum
Time Aspect
Pt
System
Tiss
Scale Type
Qn
Method Type
FISH
Details
Class
MOLPATH
Order/Observation
Observation
Short Name
Chr 12 copy num/nucleus EntNum Tiss FISH
Display Name
Chr 12 copy num/nucleus FISH (Tiss) [Entitic number]
Related Names
Frequently Asked Questions
What is LOINC code 93804-3?
LOINC code 93804-3 identifies "Chromosome 12 copy number/nucleus in Tissue by FISH". Aneusomy (varying number) of chromosome 12 is evaluated by using a DNA probe that marks the centromeric region of chromosome 12. Such a probe is also called CEP12. The ratio of the number of signals of the MDM2 gene, also on chromosome 12, to the chromosome 12 signal [LOINC: 93809-2] can indicate whether or not there is amplification of the MDM2 gene.
What does 93804-3 measure?
This code measures Chromosome 12 copy number/nucleus in Tiss. It belongs to the MOLPATH class in the LOINC classification.
What is LOINC?
LOINC (Logical Observation Identifiers Names and Codes) is a universal standard for identifying laboratory and clinical observations. It is maintained by the Regenstrief Institute and used worldwide for health data exchange.