Lab Value Analyzer

  1. 1 Before you begin, use the Drugs and conditions that can affect coagulation reference to consider drug-related causes and concomitant conditions that can affect coagulation.

    Platelet antagonists


    Herbal supplements that can affect coagulation:

    • Herbs with potential antiplatelet activity
    • Asian ginseng (Panax quinquefolius)
    • Bilberry (Vaccinium myrtillus)
    • Dong quai (Angelina sinensis)
    • Feverfew (Tanacetum parthenium)
    • Garlic (Allium sativum)
    • Ginger (Zingiber officinale)
    • Gingko (Gingko bilobae)
    • Meadowsweet (Filipendula ulmaria)
    • Siberian ginseng/eleuthero (Eleutherococcus senticosus)
    • Tumeric (Curcuma longa)
    • Willow (Salix alba)
    • Coumarin-containing herbs
    • Chamomile (Matricaria recutita, Chamaemelum mobile)
    • Fenugreek (Trigonella foenum-graecum)
    • Horse chestnut (Aesculus hippocastanum)
    • Motherworth (Leonurus cardiac)
    • Red clover (Trifolium pratense)
    PDF document Drugs and conditions that can affect coagulation reference
  2. 2 Set normal ranges [details]
    Normal ranges vary from lab to lab. Please enter the normal upper and lower ranges for the prothrombin time (PT) and activated partial thromboplastin time (aPTT) assays.1 Minimally increased or decreased lab values may be due to lab error and will be treated as normal here. Abnormal lab values should generally be rechecked.2 Please note that labs performed on blood drawn through catheters or after flawed venipuncture technique may provide erroneous results.
  1. 3 Input lab values
  2. 4 Submit and receive a list of disorders to consider based on the lab values entered

The Lab Value Analyzer is available for one-time use. Be sure to register for unlimited access.

Enter normal values for the PT and aPTT lab tests


General lab tests results PT and aPTT are required in order to continue.

000 per mcL

Specialty lab tests

Disorders to consider

Consider the disorders listed below based on the values you entered. Click each disorder for more information. These data are intended for use solely as a guide. Exercise professional judgment in evaluating any information and confirm the information made available with other sources before undertaking any diagnosis based on such information.

Get additional guidance with these resources

1. Konkle BA. Clinical approach to the bleeding patient. In: Colman RW, Marder VJ, Clowes AW, George JN, Goldhaber SZ, eds. Hemostasis and Thrombosis: Basic Principles and Clinical Practice. 5th ed. Philadelphia, PA: Lippincott Williams & Wilkins; 2006:1147-1158.
2. Kessler CM, Khokhar N, Liu M. Consultative Hemostasis and Thrombosis. 2nd ed. Philadelphia, PA: Saunders Elsevier; 2007:17-33.