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  1. Glycogen Storage Disease Type IV - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK115333
    ... enzymes typically elevated in the hepatic subtypes Hypoalbuminemia Prolonged partial thromboplastin time (PTT) and prothrombin time (PT) with progressive deterioration ...
  2. Hemophilia B - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1495
    ... severely affected persons Laboratory features Normal platelet count Prolonged activated partial thromboplastin time (aPTT) in severe and moderate hemophilia B. Normal ...
  3. von Willebrand Disease - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK7014
    ... count (thrombocytopenia), specifically in type 2B VWD. Activated partial thromboplastin time (aPTT) is often normal, but may be prolonged when the factor VIII (FVIII:C) level is ...
  4. xmlghr-summaries.xml 
    https://medlineplus.gov/download/ghr-summaries.xml
    ... people with this condition, blood tests show a prolonged activated partial thromboplastin time (PTT), a result that is typically associated with ...
  5. Prekallikrein deficiency: MedlinePlus Genetics 
    https://medlineplus.gov/genetics/condition/prekallikrein-deficiency
    ... people with this condition, blood tests show a prolonged activated partial thromboplastin time (PTT), a result that is typically associated with ...
  6. Tyrosinemia Type I - GeneReviews® - NCBI Bookshelf 
    https://www.ncbi.nlm.nih.gov/books/NBK1515
    ... for children age 3 months to 18 years) Prolonged prothrombin and partial thromboplastin times Note: (1) Changes in serum concentration of alpha- ...
  7. ABO incompatibility 
    https://medlineplus.gov/ency/article/001306.htm
    ... and blood creatinine ; in case of renal injury Prolonged prothrombin time or partial thromboplastin time (findings of DIC) Positive direct antiglobulin test (DAT) ...
  8. Congenital platelet function defects 
    https://medlineplus.gov/ency/article/000582.htm
    ... spots on the skin Heavy menstrual periods Nosebleeds Prolonged bleeding with small injuries
  9. Factor V deficiency 
    https://medlineplus.gov/ency/article/000550.htm
    ... skin Bleeding of the gums Excessive bruising Nosebleeds Prolonged or excessive loss of blood with surgery or trauma Umbilical stump bleeding
  10. Glanzmann thrombasthenia 
    https://medlineplus.gov/ency/article/001305.htm
    ... menstrual bleeding Nosebleeds that do not stop easily Prolonged bleeding with minor injuries
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