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Lab Test Dictionary

Alpha-Globin Gene Deletion or Duplication (16124X)

Methodology

Capillary Electrophoresis; Multiplex PCR


Synonyms

Hydrops Fetalis; Alpha-Globin Rare Deletion/Duplication; Hemoglobin Barts Hydrops Fetalis; Alpha-Globin Gene Triplication; Alpha-Globin Gene Number; Hemoglobin H Disease; Alpha-Thalassemia

Specimen Type

Whole Blood

Performing Lab

Quest Diagnostics San Juan Capistrano


Epic ID

Other Reference Test

Lab Test Days

Tuesday

Standard TAT

2-3 Weeks


Collection Information

Specimen Required

3-5 mL Whole Blood

Container Type

Lavender (EDTA)

Collection Instructions

Whole blood collected in a sodium heparin (green-top), lithium heparin (green-top), or an ACD Solution B (yellow-top) tube is also acceptable. Provide family history; For prenatal diagnosis with a fetal specimen: 1) Parents must be documented carriers of one of the mutations tested. 2) Maternal blood or DNA must be available. 3) Contact the laboratory genetic counselor before submission. Provide clinical information (MCV, blood work, age, alpha globin mutations detected, ethnicity).


Processing Information - Lab Use Only

Transport Temperature

Refrigerate-OK/Ambient-OK

Specimen Stability

Room Temp: 8 Days; Refrigerated: 8 Days; Frozen: Unacceptable

Rejection Criteria

Samples received frozen

Test Volume Required

5 mL Whole Blood

Minimum Test Volume

3 mL Whole Blood


Comments

Insurance authorization required prior to draw for Outpatients. MJ Approval required for Inpatients.


CPT Codes

81269


Revised

10-27-19

Initials

SL