Achondroplasia (ACH; MIM 100800) and hypochondroplasia (HCH; MIM 146000) are autosomal dominant disorders. ACH is caused by specific mutations in FGFR3. ACH represents the most common skeletal dysplasia in humans. It is characterized by rhizomelic dwarfism, trident hands and short fingers, midface hypoplasia with macrocephaly and frontal bossing. A small foramen magnum may cause generalized hypotonia, hyperreflexia or clonus in more

Tests Available

By gene: FGFR3
Next Generation Sequencing
Test Code: 1007
Deletion / Duplication
Test Code: 1756
NGS/Del Dup Comprehensive
Test Code: 1757
Sanger Sequencing
Option 1: Exons 3, 5, 7, 9, 10, 13 and 15 only
Test Code: 1008
Sanger Sequencing
Option 2: Reflex to remaining exons
Test Code: 1009

Related Panels
Skeletal dysplasia core NGS panel (10 genes)
NGS $1,390
Del Dup $990
Comp $2,230
Skeletal dysplasia core & extended NGS panel (29 genes)
NGS $1,840
Del Dup $1,300
Comp $2,990
Craniosynostosis NGS panel (25 genes)
NGS $1,800
Del Dup $1,300
Comp $2,950

Test Details

Technical Information
Disease Groups: 
Skeletal Dysplasias
CPT Codes: 
81479 x 1
Turnaround Time: 
Typically 3 to 4 weeks from receipt of a sample in the laboratory. All cases involving ongoing pregnancies will be expedited.
Non-Prenatal Specimens: 
  1. Whole blood: purple-top (EDTA) tube, minimum of 3 ml
  2. Genomic DNA: minimum of 10 µg (at a concentration of at least 50 ng/µl)
  3. Fibroblasts: 4 confluent T-25 flasks
  4. Saliva: only samples collected in Oragene DNA Self-Collection Kit or Oragene Saliva Collection Kit for Young Children are accepted
Prenatal Specimens: 
  1. Cultured cells: 4 confluent T-25 flasks derived from amnio or CVS samples
  2. Genomic DNA: minimum of 10 µg (at a concentration of at least 50 ng/µl)
Ship all specimen types at room temperature by overnight courier. Do not freeze.

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