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Twin Zygosity Analysis

Order Code: 4060

Test Information

Monozygotic twins originate from a single fertilized ovum dividing into two embryos, while dizygotic twins result from ovulation of two eggs during a single menstrual cycle.

Sample Requirements

EDTA Whole Blood (lavender top) or Buccal Swabs

Shipping Information

Room Temperature

Requested Volume

5 ml on each twin or 4-8 Buccal Swabs per requisition

Minimum/Pediatric Volume

2 ml

CPT Codes



PCR and Fragment Analysis

Turnaround Time

7 days

Test Schedule

Performed 5 days per week (Monday through Friday)


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