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Test Code TwinZyg Twin Zygosity Testing

Clinical System Name

Twin Zygosity Testing

Synonyms

Zygosity Testing

Sample Requirements

Specimen: Buccal Swab

Container(s): Sterile Screw-Capped Container

Preferred Vol: 2 swabs

Minimum Vol:  2 swabs

 

Note: Collect 2 buccal swabs from each twin. Label the container(s) appropriately.

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:

Spin: N

Aliquot: N

Temp: 2 - 4 C

Storage location:  Deliver swabs in container(s) to CPA refrigerator. Do not spin blood, deliver to CPA refrigerator.

 

Off-site collection: Do not spin whole blood. Refrigerate swabs or whole blood.

Stability

Specimen Type Temperature Time
Buccal swab or whole blood Room temp

72 h

  Refrigerated 1 w
  Frozen

N

 

Availability

STAT Performed TAT
N Collected daily 5-10 d

 

Performing Laboratory

ARUP Laboratories

500 Chipeta Way
Salt Lake City, UT 84108-1221

 

Phone Number: (800) 522-2787

Department

Department:  Send Outs

 

Phone Number: (206) 987-2563

 

Reference Range

 

   
Monozygotic Twins Greater than 99% certainty (all markers match)
Dizygotic Twins 99% certainty (two or more markers do not match)

 

Methodology

Method: Polymerase Chain Reaction (PCR)

Analytical Volume: None specified

Limitations:

Special Instructions

Links to:

 

ARUP

 

 

Send Out Instructions

 

Reference Test Name: Twin Zygosity Testing
Reference Test Number:

0050547

Instructions:

Send out M - F with ARUP courier.