73822-9

LOINC code 73822-9 identifies "Chromosome X and Y aneuploidy in Plasma cell-free DNA by Dosage of chromosome-specific cfDNA Nominal". Sex chromosome (X & Y) analysis to determine gender (XY or XX) or presence of aneuploidy can be determined based on dosage of chromosome specific ccf DNA in maternal plasma, the mother's current age and gestational age. The ccf DNA includes both fetal and maternal DNA. This code is based, but not limited in use to, the submitter's test, Harmony Prenatal Test, which is a non-invasive prenatal test intended to aid in the risk determination of fetal aneuploidy as well as trisomy 13, 18 and 21 in women with singleton pregnancies of at least 10 weeks gestational age. The submitter's lab reports results as male fetus, female fetus, or aneuploidy. For aneuploidy cases, the results of the specific findings (e.g. YY, XYY, XXX, etc.) are reported as well.

This code measures Fetal chromosome X & Y aneuploidy in Plas.cfDNA. It belongs to the MOLPATH class in the LOINC classification.

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.