title: Laboratory referral rates of genetic tests for thrombophilia workup in a major referral center.
abstract: OBJECTIVE
  The rate of laboratory referrals for thrombophilia patients' genetic workup was assessed and compared among the medical and surgical specialties and subspecialties at a major tertiary care center in Lebanon.
  
  
  METHODS
  DNA extraction was performed using the PEL-FREEZ extraction kit (PEL-FREEZ; DYNAL) and the Factor V, prothrombin, and methylenetetrahydrofolate reductase genotypic profiles were done using the FV-PTH-MTHFR StripAssay kit (ViennaLab) that employs a polymerase chain reaction-reverse hybridization method. A total of 2238 referred cases were analyzed.
  
  
  RESULTS
  Around 42.23% of all referred cases turned out to have a thrombosis-associated mutation. Referrals from medical and surgical specialties were almost equal. In the surgical specialty, most referrals came from the department of Obstetrics and Gynecology, while in the medical speciality, most of the workup referrals originated from the Hematology/Oncology physicians. However, low referral rates were reported from the emergency department and family medicine practitioners.
  
  
  CONCLUSIONS
  Genetic testing for thrombophilia workup is gaining more importance among the different medical and surgical specialties and is worth being introduced into the offered test lists of all established molecular diagnostics laboratories.
authors.affiliation: Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Rouba
authors.initials: R
authors.lastname: Hoteit
authors.forename: Hussein
authors.initials: H
authors.lastname: Halas
authors.forename: Sylvana
authors.initials: S
authors.lastname: Hassanieh
authors.forename: Rami A R
authors.initials: RA
authors.lastname: Mahfouz
mesh_terms: D000046:Academic Medical Centers / Q000706:statistics & numerical data*; D005165:Factor V / Q000235:genetics; D005260:Female; D005820:Genetic Testing / Q000706:statistics & numerical data*; D005838:Genotype; D006801:Humans; D008297:Male; D008511:Medicine; D042965:Methylenetetrahydrofolate Reductase (NADPH2) / Q000235:genetics; D009154:Mutation; D016133:Polymerase Chain Reaction; D011516:Prothrombin / Q000235:genetics; D012017:Referral and Consultation / Q000706:statistics & numerical data*; D013043:Specialties, Surgical; D019851:Thrombophilia / Q000175:diagnosis* / Q000235:genetics*
chemical_list: D005165:Factor V; D011516:Prothrombin; C573423:MTHFR protein, human; D042965:Methylenetetrahydrofolate Reductase (NADPH2)