HBA1 and HBA2 gene deletion in Amniotic fluid or Chorionic villus sample by Molecular genetics method   103844-7

LOINC Code


LOINC code103844-7
nameHBA1 and HBA2 gene deletion in Amniotic fluid or Chorionic villus sample by Molecular genetics method
descriptionAlpha-globin is an essential component of the hemoglobin tetramer, starting from the early stages of embryonic development. Deletion mutations involving one or both of the two alpha-globin genes (alpha1 and alpha2, located on chromosome 16p13) lead to reduced production of alpha-globin chains, and are the major cause of alpha-thalassemia. Severity of the disease is dependent on the total copy number of functional alpha-globin genes remaining. This assay detects the seven most common deletions (-alpha3.7, -alpha4.2, -alpha20.5, --SEA, --MED, -FIL, and --THAI) found in patients with alpha-thalassemia. This assay is performed by allele-specific PCR amplification of deletion mutation fragments, followed by agarose gel electrophoresis of the amplification products.
statusACTIVE

Fully-Specified Name

componentHBA1 & HBA2 gene deletion
propertyFind  =  Finding
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemAmnio fld/CVS
    Amnio fld  =  Amniotic fluid
scaleDoc  =  Document:  A document that could be in many formats (XML, narrative, etc.)
methodMolgen  =  Molecular Genetics:  General class of methods used to detect genetic attributes on a molecular basis including RFL, PCR and other methods.

Additional Names

short nameHBA1 + HBA2 Del Amn/CVS

Basic Attributes

classMOLPATH.DELDUP
type1  Laboratory
order vs. observationBoth

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.77
last change typeADD  - added

Related Names

AF
alpha-2 globin
Amn
Amn fl
Amn/CVS
Amnio
Amniotic flu
Amniotic fluid
Chorionic villi
Chorionic villus sample
Del
Deletions
Document
Finding
Findings
HBA1 + HBA2
HBA-T2
HBH
Hemoglobin, alpha 2
Molecular genetics
Molecular pathology
MOLPATH
MOLPATH.DELDUP
PCR
Point in time
Random

Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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