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HelpTest Code LAB3527 Twin Zygosity Testing
Clinical System Name
Twin Zygosity Testing
Sample Requirements
Specimen: Whole Blood
Container(s): From each twin: Lavender/EDTA, Yellow/ACD A, or Yellow/ACD B
Preferred Vol: From each twin: 2.0 mL
Minimum Vol: From each twin: 1.0 mL
Note: 1-3 mL whole blood in Lavender/EDTA or Yellow/ACD A or B also acceptable. Blood must be collected from BOTH twins.
Processing Instructions
Reject due to: Frozen specimens.
Spin: N
Aliquot: N
Temp: 2 - 4 C
Storage Location: Deliver swabs in container(s) to CPA refrigerator, Send Outs rack. Do not spin blood, deliver to CPA refrigerator, Send Outs rack.
Off-site Collection: Do not spin whole blood. Refrigerate swabs or whole blood.
Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood | Room Temp |
7 d |
| Refrigerated | 1 mo | |
| Frozen |
Unacceptable |
Performing Laboratory
ARUP Laboratories
500 Chipeta Way
Salt Lake City, UT 84108-1221
Phone Number: (800) 522-2787
Department
Department: Send Outs/Genetic
Phone Number: (206) 987-2563
Synonyms
Fetal Zygosity;Mono/Dizygotic Differentiation; Newborn Zygosity; Zygosity Testing; Zygosity, Twin Pre/Postnatal
Availability
| STAT | Performed | TAT |
|---|---|---|
| N | Varies | 5 - 10 d |
Methodology
Polymerase Chain Reaction (PCR)/Fragment Analysis
Send Out Instructions
| Reference Test Name: | Twin Zygosity |
| Reference Test Number: | |
| Instructions: |
Send out Monday through Friday with the ARUP courier. |