Blood | Extracted DNA | Cultured Fibroblasts | Muscle | Buccal Cells
Blood: Draw blood in a lavender top EDTA tube, Sample Stability: 5-7 days, Preferred volume: 4 ml, Minimum volume: 2 ml, DO NOT FREEZE. Extracted DNA: From leukocytes, muscle, or fibroblasts: Preferred quantity: 1 microgram, Minimum quantity: 800 nanograms. Genomic DNA should be eluted in sterile Dnase/Rnase free water or TE. The A260:A280 ratio should be 1.8-2.0. Cultured Fibroblasts: Two T-25 flasks of fibroblasts, preferably ~90% confluent. TAT will be extended by 7-14 days if cells are not confluent upon arrival. Muscle: 50-75 milligrams muscle snap frozen in liquid nitrogen and maintained at -80°Celsius or below. Buccal Cells: One buccal swab should be used for collection. Do not discard solution in collection tube. Follow collection instructions supplied. Stability at ambient temperature is 60 days.
Blood: Lavender-Top (EDTA) Tube, Buccal Swab from MNG Kit, Tissue or Extracted DNA: Sterile screw capped vial, Cultured cells: T25 flask
Blood: Specimens should be shipped overnight in a secure container at room temperature. Extracted DNA: Should be shipped overnight at room temperature. If previously frozen, DNA can be shipped in an insulated container with wet or dry ice. Cultured Fibroblasts: T-25 flasks containing fibroblasts should be shipped in an insulated container at room temperature. Flasks should be completely filled with media and cells should be ~90% confluent. Fibroblast samples must be certified free from Mycoplasma. MNG is able to perform this service for a small charge (TC05). For NGS panels, TAT will be extended by 7-14 days if cells are not confluent upon arrival. Muscle: Samples should be shipped frozen in an insulated container with 5-7 lbs. dry ice, overnight. Buccal cells: Should be shipped overnight in a secure container at room temperature.
Blood - ship ASAP, but stable up to 5 days post-collection at room temperature. DO NOT FREEZE; Swab - 60 day post-collection room temperature stability; DNA - ship at room temperature after extraction; Fibroblasts - ship flask in insulated container at room temp or refigerated; Muscle - ship in insulated container with 5-7 lbs of dry ice
Room Temperature: Blood - 5 days, Swab - 60 days, DNA - 30 days, Muscle - 0 days, Fibroblasts - 2-3 days; Refrigerated: Blood - 5 days, Swab - 60 days, DNA - 30 days, Muscle - 0 days, Fibroblasts - 2-3 days; Frozen: Blood - DO NOT FREEZE, Swab - 60 days, DNA - Indefinitely, Muscle - Indefinitely, Fibroblasts - Indefinitely; Freeze/Thaw: None
Extracted DNA A260:A280 ratio of outside of 1.8-2.0 range; Frozen blood EDTA tube; Thawed and/or fatty muscle sample; Insufficient buccal cell collection
Neurotransmitter disorders are a heterogeneous group of inherited neurometabolic disorders caused by defects in the synthesis, degradation and transport of neurotransmitters including monoamines, glycine, and gamma-amino butyric acid. Monoamine neurotransmitters consist of catecholamines (dopamine, norepinephrine and epinephrine) and serotonin which play major roles in the control of locomotion, mood and behavior. The onset of neurotransmitter disorders can occur at any age but most commonly in infancy and childhood. The clinical presentations are mainly neurological features including dystonia, developmental delay, truncal hypotonia, dyskinesia, spastic paraparesis, choreoathetosis, oculogyric crises, seizures and autonomic dysfunctions. The clinical features are highly variable depending on the type and severity with substantial clinical overlaps among the disorders in this group. Furthermore, the clinical phenotype also mimics that of many other neurological disorders. The inheritance is mostly autosomal recessive except for autosomal dominant guanosine triphosphate (GTP) cyclohydrolase 1 (GCH1) deficiency. An accurate diagnosis has important implications as some of these disorders are readily treatable.
SINGLE Blood Genetic Testing, Buccal Swab Genetic Testing