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  2. Reference ranges for blood tests - Wikipedia

    en.wikipedia.org/wiki/Reference_ranges_for_blood...

    The diagrams below take inter-cycle and inter-woman variability into account in displaying reference ranges for estradiol, progesterone, FSH and LH. Levels of estradiol (the main estrogen), progesterone, luteinizing hormone and follicle-stimulating hormone during the menstrual cycle. [88]

  3. Direct factor Xa inhibitors - Wikipedia

    en.wikipedia.org/wiki/Direct_factor_Xa_inhibitors

    A specialist may request a quantitative factor Xa assay in a situation of overdose. [2] Andexanet alfa, a specific antidote to reverse the anticoagulant activity of direct Xa inhibitors in the event of major bleeding, was approved by the FDA in 2018. [9] It is also available in the UK. [10]

  4. Factor X - Wikipedia

    en.wikipedia.org/wiki/Factor_X

    The first crystal structure of human factor Xa was deposited in May 1993. To date, 191 crystal structures of factor Xa with various inhibitors have been deposited in the protein data bank. The active site of factor Xa is divided into four subpockets as S1, S2, S3 and S4. The S1 subpocket determines the major component of selectivity and binding.

  5. Low-molecular-weight heparin - Wikipedia

    en.wikipedia.org/wiki/Low-molecular-weight_heparin

    Results are given in units/mL of anti-factor Xa, such that high values indicate high levels of anticoagulation and low values indicate low levels of anticoagulation in the plasma sample. [ 17 ] LMWHs have a targeted therapeutic window of approximately 0.6–1.2 IU/ml. LMWH has a potency of 70 units/mg of anti-factor Xa activity and a ratio of ...

  6. Antithrombin - Wikipedia

    en.wikipedia.org/wiki/Antithrombin

    Antithrombin (AT) is a small glycoprotein that inactivates several enzymes of the coagulation system. It is a 464-amino-acid protein produced by the liver.It contains three disulfide bonds and a total of four possible glycosylation sites. α-Antithrombin is the dominant form of antithrombin found in blood plasma and has an oligosaccharide occupying each of its four glycosylation sites.

  7. Factor X deficiency - Wikipedia

    en.wikipedia.org/wiki/Factor_X_deficiency

    Factor X deficiency (X as Roman numeral ten) is a bleeding disorder characterized by a lack in the production of factor X (FX), an enzyme protein that causes blood to clot in the coagulation cascade. Produced in the liver FX when activated cleaves prothrombin to generate thrombin in the intrinsic pathway of coagulation.

  8. Rivaroxaban - Wikipedia

    en.wikipedia.org/wiki/Rivaroxaban

    Rivaroxaban inhibits both free and bound Factor Xa in the prothrombinase complex. [33] It is a selective direct factor Xa inhibitor with an onset of action of 2.5 to 4 hours. [ 34 ] Inhibition of Factor Xa interrupts the intrinsic and extrinsic pathway of the blood coagulation cascade , inhibiting both thrombin formation and development of thrombi.

  9. Fondaparinux - Wikipedia

    en.wikipedia.org/wiki/Fondaparinux

    Fondaparinux is a synthetic pentasaccharide factor Xa inhibitor. Fondaparinux binds antithrombin and accelerates its inhibition of factor Xa.. Apart from the O-methyl group at the reducing end of the molecule, the identity and sequence of the five monomeric sugar units contained in fondaparinux is identical to a sequence of five monomeric sugar units that can be isolated after either chemical ...