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VWD Type 2M Exon 28 Sequence Analysis

Order Code: 1284

Also Known as

Exon 28, Von Willebrand Factor

Disease State

Test Information

Genetic analysis is used to diagnose type 2M VWD in patients with a discrepancy between VWF activity and antigen not caused by abnormal multimer findings. While it can confirm a type 2B VWD diagnosis, VWD Type 2A/2B Reflex Sequence Analysis is suggested.

Sample Requirements

Fetal: Amniotic Fluid, CVS, Cultured Amniocytes or Cultured CVS; Parental/Patient: EDTA Whole Blood (lavender top)

Shipping Information

Room Temperature

Requested Volume

Fetal: 7-15 ml Amniotic Fluid or 5-10 mg CVS, backup culture of Amniocytes or CVS is highly recommended; Two T25 flasks Cultured Amniocytes or CVS (2x10^6 minimum); Parental/Patient: 3-5 ml

Minimum/Pediatric Volume

Fetal: Call Laboratory; Parental/Patient: 2 ml

CPT Codes



PCR and Bi-directional DNA Sequencing

Turnaround Time

21 days


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