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HelpTest Code LAB2776 Alpha Hemoglobin DNA Sequence
Clinical System Name
Alpha Hemoglobin DNA Sequence
Synonyms
HBA1
HBA2
Description
Sequencing of HBA1 and (HBA2) to analyze genetic causes of Alpha-Thalassemia.
Sample Requirements
Specimen: Whole Blood
Container(s): Lavender/EDTA
Preferred Vol: 2.0 mL
Minimum Vol: 1.0 mL
Specimen: Extracted DNA
Container(s): Sterile Plastic Tube
Preferred Vol: 30 ul at a concentration of 100ng/ul concentration
Minimum Vol: 20 ul at a concentration of 100ng/ul
Alternative Specimen (e.g. saliva): not accepted at this time.
Note: Yellow top/ACD are acceptable. Buccal cells are acceptable for transplant patients. For other specimen types contact the UW Genetics Lab (206) 598-6429.
Processing Instructions
Reject due to: Dark Green/Sodium Heparin or Formalin-fixed paraffin-embedded tissues
Spin: N
Aliquot: N
Temp: 2 - 4 C
Storage location: Do not spin or separate specimen. Store whole blood affixed with a large computer label in the CPA refrigerator, Send Outs rack.
Off-site collection: Do not spin or separate specimen. Tranpsort refrigerated.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood | Room temp | 3 d |
| Refrigerated | 7 d | |
| Frozen | N | |
| Extracted DNA | Room temp | 3 - 4 d |
| Refrigerated | 1 y | |
| Frozen | Indefinitely |
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Weekly | 3 w |
Performing Laboratory
University of Washington Genetics and Solid Tumors Laboratory (UW GSTL)
Department of Laboratory Medicine
Genetics Lab
1959 NE Pacific St, NW220
Seattle, WA 98195
Phone Number: (206) 520-4600
Department
Department: Send Outs/Genetic
Phone Number: (206) 987-2563
Methodology
Capillary sequencing
Reference Range
Interpretive report provided.
Clinical Utility
A genetic diagnosis may have implications for treatment, management, recurrence risk, and family member testing.
Send Out Instructions
| Reference Test Name: | Alpha Hemoglobin DNA Sequence |
| Reference Test Number: | HASEQ |
| Instructions: | Send out Monday - Friday with the UW courier. |