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Lupus anticoagulant

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will generally remain abnormal. However, if the clotting time of the mixed plasma corrects towards normal, the presence of an inhibitor such as the lupus anticoagulant is less likely, instead indicating a deficient quantity of clotting factor (that is replenished by the normal plasma). In case of a corrected mixing test, a lower dose of normal pooled plasma is often used, such as a 4:1 mix (4 times as much patient plasma than normal pooled plasma), as some studies suggest that this method is more sensitive for the detection of a weak lupus anticoagulant that is not enough prevalent or potent to affect a 1:1 mix.
71:(aPTT). Investigators speculate that the antibodies interfere with phospholipids used to induce in vitro coagulation. In vivo, the antibodies are thought to interact with platelet membrane phospholipids, increasing adhesion and aggregation of platelets, which accounts for the in vivo prothrombotic characteristics. 285:, and the British Committee for Standards in Haematology. The result may be reported as a ratio used to identify the cutoff. A ratio of 1.2 is commonly used, such that a value <1.2 indicates the absence of a lupus anticoagulant, while a value >1.2 indicates the presence of a lupus anticoagulant. 233:
is generally in the initial workup of a prolonged aPTT. In a mixing test, patient plasma is mixed with normal pooled plasma and the clotting is reassessed. If a clotting inhibitor such as a lupus anticoagulant is present, the inhibitor will interact with the normal pooled plasma and the clotting time
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Devreese KMJ, de Groot PG, de Laat B, Erkan D, Favaloro EJ, Mackie I, Martinuzzo M, Ortel TL, Pengo V, Rand JH, Tripodi A, Wahl D, Cohen H. Guidance from the Scientific and Standardization Committee for lupus anticoagulant/antiphospholipid antibodies of the International Society on Thrombosis and
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However, only about 60 per cent of patients with lupus anticoagulants have a both a prolonged APTT and APTT mix, making it unsuitable as the only test in case of a high suspicion of the antiphospholipid syndrome. Thus, one or more of the following tests are generally performed to detect lupus
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Keeling D, Mackie I, Moore GW, Greer IA, Greaves M; British Committee for Standards in Haematology. Guidelines on the investigation and management of antiphospholipid syndrome. Br J Haematol. 2012 Apr;157(1):47-58. doi: 10.1111/j.1365-2141.2012.09037.x. Epub 2012 Feb 8. PMID:
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Favaloro EJ. Coagulation mixing studies: Utility, algorithmic strategies and limitations for lupus anticoagulant testing or follow up of abnormal coagulation tests. Am J Hematol. 2020 Jan;95(1):117-128. doi: 10.1002/ajh.25669. Epub 2019 Nov 20. PMID:
257:, or silica clotting time. As a further confirmation, a second test with the addition of excess phospholipid will correct the prolongation (conceptually known as "phospholipid neutralization"), confirming the diagnosis of a lupus anticoagulant. 187:, and diagnostic criteria require one clinical event (i.e. thrombosis or pregnancy complication) and two positive blood test results spaced at least three months apart that detect at least one of the three types of antibodies. 704:
Htet, S.; Hayes, L.; Leung, T. (2015). "Strong lupus anticoagulant (LA) as a cause for prolonged prothrombin time (PT), activated partial thromboplastin time (APTT) and abnormally low intrinsic factor (IF) levels".
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Favaloro EJ, Pasalic L, Selby R. Testing for the lupus anticoagulant: the good, the bad, and the ugly. Res Pract Thromb Haemost. 2024 Mar 18;8(3):102385. doi: 10.1016/j.rpth.2024.102385. PMID: 38623474; PMCID:
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PT has been reported, likely by lupus anticoagulant interfering with the phospholipid component of the PT reagent, particularly when using recombinant tissue factor and purified phospholipids.
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be prevented with the administration of aspirin and unfractionated heparin. The Cochrane Database of Systematic Reviews provide a deeper understanding on the subject. For refractory cases,
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Haemostasis: Update of the guidelines for lupus anticoagulant detection and interpretation. J Thromb Haemost. 2020 Nov;18(11):2828-2839. doi: 10.1111/jth.15047. PMID: 33462974.
273:, wherein such phospholipids specifically neutralize lupus anticoagulant, so a normalization of aPTT after adding it specifically indicates the presence lupus anticoagulants. 309:, such as extremity phlebitis or dural sinus vein thrombosis. Patients with a well-documented (i.e., present at least twice) lupus anticoagulant and a history of 834:
Efthymiou M, Bertolaccini ML, Cohen H (February 2024). "Viewpoint: Lupus anticoagulant detection and interpretation in antiphospholipid syndrome".
1039:"Aspirin or heparin or both for improving pregnancy outcomes in women with persistent antiphospholipid antibodies and recurrent pregnancy loss" 98:, amongst other complications). People with lupus erythematosus are more likely to develop a lupus anticoagulant than the general population. 546: 912:
Triplett DA, Barna LK, Unger GA (1993). "A hexagonal (II) phase phospholipid neutralization assay for lupus anticoagulant identification".
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Denis-Magdelaine, A.; Flahault, A.; Verdy, E. (1995). "Sensitivity of Sixteen APTT Reagents for the Presence of Lupus Anticoagulants".
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Clinical and Laboratory Standards Institute(CLSI) (2014). "Laboratory testing for the lupus anticoagulant: Approved Guideline".
516: 810: 393: 1424: 247: 115:. The "lupus anticoagulant paradox" may be explained by platelet activation as described above, as well as enhancement of 1210: 1479: 334: 238:
anticoagulant if a high suspicion remains, and/or specify lupus anticoagulant as the cause of an abnormal mixing test:
1513: 1453: 1304: 94:, and only a small proportion will proceed to develop this disease (which causes joint pains, skin problems and 1563: 1341: 180: 116: 469:"A hemorrhagic disorder caused by circulating anticoagulant in patients with disseminated lupus erythematosus" 330: 1331: 679: 321:
and a lupus anticoagulant should probably be observed. Current evidence suggests that the risk of recurrent
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can interfere with lupus anticoagulant assays and generate either false-positive or false-negative findings.
1264: 1088:"The effects of hydroxychloroquine and its promising use in refractory obstetric antiphospholipid syndrome" 356: 340:
Miscarriages may be more prevalent in patients with a lupus anticoagulant. Some of these miscarriages may
220:(PT), another non-specific coagulation test, is normally unaffected by lupus anticoagulant. Nevertheless, 1584: 1469: 1441: 1404: 1396: 1324: 264: 204: 191: 184: 68: 1372: 1356: 1137:"A randomized study of thromboprophylaxis in women with unexplained consecutive recurrent miscarriages" 286: 179:
In a suspected antiphospholipid syndrome, lupus anticoagulant is generally tested in conjunction with
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is enhanced whether that antibody is measured on serological testing or functional testing. The
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Fierro JJ, Velåsquez-Berrío M, Ospina A, Henning S, de Leeuw K, Cadavid J ÁP (February 2024).
381: 1446: 1314: 1288: 290: 1529: 253: 67:, as these antibodies increase coagulation times in laboratory tests such as the activated 8: 1309: 1199: 91: 1112: 1087: 750:"Recent guidelines and recommendations for laboratory detection of lupus anticoagulants" 634: 607: 444: 417: 382:"21.3.1 Antiphospholipid Antibodies: Lupus Anticoagulant and Anticardiolipin Antibodies" 267:
of becoming prolonged in the presence of lupus anticoagulant compared to a regular aPTT.
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Treatment for a lupus anticoagulant is usually undertaken in the context of documented
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Last reviewed on August 22, 2018. This article was last modified on December 6, 2019.
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Molhoek JE, de Groot PG, Urbanus RT (July 2018). "The Lupus Anticoagulant Paradox".
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specify that both serological and functional tests must be positive to diagnose the
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Tohidi-Esfahani I, Mittal P, Isenberg D, Cohen H, Efthymiou M (January 2024).
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HamulyĂĄk EN, Scheres LJ, Marijnen MC, Goddijn M, Middeldorp S (May 2020).
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The main indication for testing for lupus anticoagulant is a suspected
123:α. Another proposed mechanism is the antibody-mediated destruction of 56: 882: 683: 484: 379: 1415: 1351: 190:
Testing for lupus anticoagulant can also be indicated by a prolonged
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Guidelines for lupus anticoagulant testing have been issued by the
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Dolitzky M, Inbal A, Segal Y, Weiss A, Brenner B, Carp H (2006).
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Both words in the term "lupus anticoagulant" can be misleading:
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should be considered candidates for indefinite treatment with
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Most patients with a lupus anticoagulant do not actually have
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The term "anticoagulant" accurately describes its function
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Measuring Immunity: Basic biology and clinical assessment
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associated with the cell membrane. Its name is a partial
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Comptes Rendus de l'Académie des Sciences, Série III
418:"Platelets and Thrombotic Antiphospholipid Syndrome" 245:-sensitive functional clotting testing, such as the 539: 380:Antonia Joussen; T.W. Gardner; B. Kirchhof (2007). 160:as well as pregnancy-related complications such as 911: 74:The condition was first described by hematologist 373: 212:in vague symptoms, and is a non-specific test of 119:and suppression of the anticoagulant activity of 1576: 655: 653: 271:Hexagonal (II) phase phospholipid neutralization 1009: 788: 703: 605: 1265: 871:Pathophysiology of Haemostasis and Thrombosis 782: 697: 650: 148:, whose main manifestations are blood clots ( 789:McMahon, Maureen; Kalunian, Kenneth (2005). 1003: 905: 1272: 1258: 139: 1152: 1111: 1062: 765: 633: 623: 492: 443: 433: 63:. The name derives from their properties 30:Lupus antibody, LA, LAC, lupus inhibitors 1010:Viard JP, Amoura Z, Bach JF (1991). "". 1577: 466: 1253: 747: 606:Hu J, Chen L, Ruan J, Chen X (2024). 523:. Spring–Summer 2006. Archived from 517:"Lock Conley looks back and blushes" 682:. APS | Action. Archived from 509: 13: 1279: 719:10.1097/01.PAT.0000461585.89264.ae 335:antiphospholipid antibody syndrome 14: 1596: 1173: 473:Journal of Clinical Investigation 248:dilute Russell's viper venom time 1154:10.1016/j.fertnstert.2005.12.068 803:10.1016/B978-012455900-4/50279-8 317:. Patients with no history of 1128: 1079: 1030: 993: 983: 973: 958: 948: 827: 741: 1055:10.1002/14651858.CD012852.pub2 797:. Elsevier. pp. 210–220. 672: 599: 564: 460: 409: 181:anti-apolipoprotein antibodies 117:activated protein C resistance 81: 1: 661:"Lupus Anticoagulant Testing" 366: 848:10.1093/rheumatology/kead623 300: 7: 1425:Anti-neutrophil cytoplasmic 1397:Anti-mitochondrial antibody 793:. In Lotze, Michael (ed.). 680:"Antiphospholipid Syndrome" 612:Front Endocrinol (Lausanne) 467:Conley, C. Lockard (1952). 388:. Springer. pp. 430–. 351:Thrombosis is treated with 208:is generally included in a 185:anti-cardiolipin antibodies 69:partial thromboplastin time 10: 1601: 1541:Anti-citrullinated peptide 1104:10.1007/s00296-023-05457-5 1043:Cochrane Database Syst Rev 791:"17. SLE-Associated Tests" 625:10.3389/fendo.2024.1314214 287:Direct oral anticoagulants 194:test that is unexplained. 1551: 1488: 1462: 1413: 1395: 1332:Anti-topoisomerase/Scl-70 1287: 1181: 327:antiphospholipid antibody 197: 146:antiphospholipid syndrome 26: 21: 386:Retinal Vascular Disease 1454:Anti-TPO/Antimicrosomal 748:Moore GW (March 2014). 140:Indications for testing 127:A5 on the membranes of 926:10.1055/s-0038-1649671 767:10.1055/s-0033-1364185 585:10.1055/s-0037-1606190 210:differential diagnosis 55:, as it is actually a 1514:Anti-transglutaminase 1289:Anti-nuclear antibody 836:Rheumatology (Oxford) 291:vitamin K antagonists 325:in patients with an 261:Lupus-sensitive aPTT 254:Kaolin clotting time 109:, it functions as a 1564:Anti-apolipoprotein 1501:Lupus anticoagulant 967:CLSI Document H60-A 754:Semin Thromb Hemost 573:Semin Thromb Hemost 435:10.3390/jcm13030741 348:may be considered. 216:. In contrast, the 92:lupus erythematosus 37:Lupus anticoagulant 22:Lupus anticoagulant 1585:Coagulation system 1552:Multiple locations 1442:Anti-smooth muscle 667:. 6 December 2019. 346:hydroxychloroquine 1572: 1571: 1559:Anti-phospholipid 1536:Rheumatoid factor 1247: 1246: 883:10.1159/000217148 842:(SI): SI54–SI63. 812:978-0-12-455900-4 485:10.1172/JCI102648 395:978-3-540-29541-9 222:falsely increased 76:C. Lockard Conley 34: 33: 16:Medical condition 1592: 1521:not autoantibody 1470:Anti-ganglioside 1405:Anti-cardiolipin 1274: 1267: 1260: 1251: 1250: 1179: 1178: 1167: 1166: 1156: 1132: 1126: 1125: 1115: 1083: 1077: 1076: 1066: 1034: 1028: 1027: 1007: 1001: 997: 991: 987: 981: 977: 971: 970: 962: 956: 952: 946: 945: 909: 903: 902: 866: 860: 859: 831: 825: 824: 786: 780: 779: 769: 745: 739: 738: 701: 695: 694: 692: 691: 676: 670: 668: 665:Lab Tests Online 657: 648: 647: 637: 627: 603: 597: 596: 568: 562: 561: 559: 558: 549:. Archived from 543: 537: 536: 534: 532: 521:Hopkins Medicine 513: 507: 506: 496: 464: 458: 457: 447: 437: 413: 407: 406: 404: 402: 377: 331:Sapporo criteria 218:prothrombin time 170:preterm delivery 19: 18: 1600: 1599: 1595: 1594: 1593: 1591: 1590: 1589: 1575: 1574: 1573: 1568: 1547: 1508:Coeliac disease 1484: 1458: 1409: 1391: 1373:Anti-centromere 1283: 1278: 1248: 1243: 1242: 1190: 1176: 1171: 1170: 1133: 1129: 1084: 1080: 1049:(5): CD012852. 1035: 1031: 1008: 1004: 998: 994: 988: 984: 978: 974: 963: 959: 953: 949: 910: 906: 867: 863: 832: 828: 813: 787: 783: 746: 742: 702: 698: 689: 687: 678: 677: 673: 659: 658: 651: 604: 600: 569: 565: 556: 554: 545: 544: 540: 530: 528: 527:on 21 June 2013 515: 514: 510: 465: 461: 414: 410: 400: 398: 396: 378: 374: 369: 303: 200: 142: 84: 17: 12: 11: 5: 1598: 1588: 1587: 1570: 1569: 1567: 1566: 1561: 1555: 1553: 1549: 1548: 1546: 1545: 1544: 1543: 1538: 1525: 1524: 1523: 1522: 1516: 1504: 1503: 1498: 1492: 1490: 1486: 1485: 1483: 1482: 1480:Anti-glutamate 1477: 1472: 1466: 1464: 1460: 1459: 1457: 1456: 1451: 1450: 1449: 1439: 1438: 1437: 1432: 1421: 1419: 1411: 1410: 1408: 1407: 1401: 1399: 1393: 1392: 1390: 1389: 1383: 1382: 1376: 1375: 1369: 1368: 1367: 1366: 1365: 1364: 1359: 1354: 1349: 1339: 1334: 1320: 1319: 1318: 1317: 1312: 1307: 1293: 1291: 1285: 1284: 1281:Autoantibodies 1277: 1276: 1269: 1262: 1254: 1245: 1244: 1241: 1240: 1229: 1218: 1207: 1191: 1186: 1185: 1183: 1182:Classification 1175: 1174:External links 1172: 1169: 1168: 1127: 1098:(2): 223–234. 1078: 1029: 1018:(13): 607–12. 1002: 992: 982: 972: 957: 947: 914:Thromb Haemost 904: 861: 826: 811: 781: 740: 696: 671: 649: 598: 579:(5): 445–452. 563: 538: 508: 479:(6): 621–622. 459: 408: 394: 371: 370: 368: 365: 353:anticoagulants 315:anticoagulants 302: 299: 293:used to treat 275: 274: 268: 258: 199: 196: 141: 138: 137: 136: 99: 96:kidney failure 83: 80: 43:that binds to 41:immunoglobulin 32: 31: 28: 24: 23: 15: 9: 6: 4: 3: 2: 1597: 1586: 1583: 1582: 1580: 1565: 1562: 1560: 1557: 1556: 1554: 1550: 1542: 1539: 1537: 1534: 1533: 1532: 1531: 1527: 1526: 1520: 1517: 1515: 1512: 1511: 1509: 1506: 1505: 1502: 1499: 1497: 1496:Anti-thrombin 1494: 1493: 1491: 1489:Extracellular 1487: 1481: 1478: 1476: 1473: 1471: 1468: 1467: 1465: 1463:Cell membrane 1461: 1455: 1452: 1448: 1445: 1444: 1443: 1440: 1436: 1433: 1431: 1428: 1427: 1426: 1423: 1422: 1420: 1417: 1412: 1406: 1403: 1402: 1400: 1398: 1394: 1388: 1385: 1384: 1381: 1378: 1377: 1374: 1371: 1370: 1363: 1360: 1358: 1355: 1353: 1350: 1348: 1345: 1344: 1343: 1340: 1338: 1335: 1333: 1330: 1329: 1328: 1326: 1322: 1321: 1316: 1313: 1311: 1308: 1306: 1303: 1302: 1301: 1299: 1295: 1294: 1292: 1290: 1286: 1282: 1275: 1270: 1268: 1263: 1261: 1256: 1255: 1252: 1239: 1235: 1234: 1230: 1228: 1224: 1223: 1219: 1217: 1213: 1212: 1208: 1206: 1202: 1201: 1197: 1193: 1192: 1189: 1184: 1180: 1164: 1160: 1155: 1150: 1146: 1142: 1141:Fertil Steril 1138: 1131: 1123: 1119: 1114: 1109: 1105: 1101: 1097: 1093: 1092:Rheumatol Int 1089: 1082: 1074: 1070: 1065: 1060: 1056: 1052: 1048: 1044: 1040: 1033: 1025: 1021: 1017: 1014:(in French). 1013: 1006: 996: 986: 976: 968: 961: 951: 943: 939: 935: 931: 927: 923: 920:(5): 787–93. 919: 915: 908: 900: 896: 892: 888: 884: 880: 877:(3): 98–105. 876: 872: 865: 857: 853: 849: 845: 841: 837: 830: 822: 818: 814: 808: 804: 800: 796: 792: 785: 777: 773: 768: 763: 760:(2): 163–71. 759: 755: 751: 744: 736: 732: 728: 724: 720: 716: 712: 708: 700: 686:on 2013-07-25 685: 681: 675: 666: 662: 656: 654: 645: 641: 636: 631: 626: 621: 617: 613: 609: 602: 594: 590: 586: 582: 578: 574: 567: 553:on 2008-08-21 552: 548: 542: 526: 522: 518: 512: 504: 500: 495: 490: 486: 482: 478: 474: 470: 463: 455: 451: 446: 441: 436: 431: 427: 423: 419: 412: 397: 391: 387: 383: 376: 372: 364: 362: 358: 354: 349: 347: 343: 338: 336: 332: 328: 324: 320: 316: 312: 308: 298: 296: 292: 288: 284: 280: 272: 269: 266: 262: 259: 256: 255: 250: 249: 244: 241: 240: 239: 235: 232: 231: 225: 223: 219: 215: 211: 207: 206: 195: 193: 188: 186: 182: 177: 175: 172:, and severe 171: 167: 163: 159: 155: 151: 147: 134: 130: 126: 122: 118: 114: 113: 108: 104: 100: 97: 93: 89: 88: 87: 79: 77: 72: 70: 66: 62: 58: 57:prothrombotic 54: 50: 46: 45:phospholipids 42: 38: 29: 25: 20: 1528: 1519:Anti-gliadin 1500: 1387:Anti-histone 1323: 1296: 1231: 1220: 1209: 1194: 1147:(2): 362–6. 1144: 1140: 1130: 1095: 1091: 1081: 1046: 1042: 1032: 1015: 1011: 1005: 1000:PMC11017341. 995: 985: 975: 966: 960: 950: 917: 913: 907: 874: 870: 864: 839: 835: 829: 794: 784: 757: 753: 743: 710: 706: 699: 688:. Retrieved 684:the original 674: 664: 615: 611: 601: 576: 572: 566: 555:. Retrieved 551:the original 541: 529:. Retrieved 525:the original 520: 511: 476: 472: 462: 425: 421: 411: 399:. Retrieved 385: 375: 350: 341: 339: 304: 276: 270: 260: 252: 246: 243:Phospholipid 236: 228: 226: 203: 201: 189: 178: 174:preeclampsia 143: 112:procoagulant 110: 85: 73: 64: 60: 36: 35: 618:: 1314214. 547:"wustl.edu" 342:potentially 265:sensitivity 230:mixing test 214:coagulation 162:miscarriage 133:trophoblast 129:endothelial 82:Terminology 27:Other names 1447:Anti-actin 1380:Anti-dsDNA 1315:Anti-sp100 1305:Anti-gp210 1233:DiseasesDB 690:2013-11-06 557:2009-02-17 531:5 December 428:(3): 741. 422:J Clin Med 367:References 323:thrombosis 319:thrombosis 311:thrombosis 307:thrombosis 295:thrombosis 166:stillbirth 152:) in both 150:thrombosis 131:cells and 105:. However 1416:cytoplasm 1352:Anti-nRNP 990:31674066. 980:22313321. 891:1424-8832 727:0031-3025 707:Pathology 301:Treatment 78:in 1952. 59:antibody 1579:Category 1475:Anti-GBM 1418:antibody 1337:Anti-Jo1 1310:Anti-p62 1163:16769056 1122:37741812 1113:10796698 1073:32358837 942:35046350 856:38320587 821:64401294 776:24500573 735:74865864 644:38495790 635:10940358 593:28898901 503:14938435 454:38337435 445:10856779 361:warfarin 154:arteries 103:in vitro 65:in vitro 53:misnomer 49:proteins 1362:Anti-La 1357:Anti-Ro 1347:Anti-Sm 1227:D016682 1064:7195627 1024:1782567 934:8128436 899:7607585 713:: S90. 401:29 June 125:Annexin 107:in vivo 61:in vivo 1435:P-ANCA 1430:C-ANCA 1216:107320 1205:289.81 1161:  1120:  1110:  1071:  1061:  1022:  940:  932:  897:  889:  854:  819:  809:  774:  733:  725:  642:  632:  591:  501:  494:436459 491:  452:  442:  392:  198:Workup 135:cells. 39:is an 1414:Anti- 938:S2CID 731:S2CID 357:LMWHs 158:veins 1342:ENA4 1222:MeSH 1211:OMIM 1200:9-CM 1159:PMID 1118:PMID 1069:PMID 1047:2020 1020:PMID 930:PMID 895:PMID 887:ISSN 852:PMID 817:OCLC 807:ISBN 772:PMID 723:ISSN 640:PMID 589:PMID 533:2013 499:PMID 450:PMID 403:2010 390:ISBN 359:and 289:and 283:CLSI 279:ISTH 205:aPTT 192:aPTT 183:and 156:and 121:TFPI 47:and 1325:ENA 1298:PBC 1238:775 1196:ICD 1149:doi 1108:PMC 1100:doi 1059:PMC 1051:doi 1016:313 922:doi 879:doi 844:doi 799:doi 762:doi 715:doi 630:PMC 620:doi 581:doi 489:PMC 481:doi 440:PMC 430:doi 363:). 202:An 1581:: 1530:RA 1510:: 1236:: 1225:: 1214:: 1203:: 1157:. 1145:86 1143:. 1139:. 1116:. 1106:. 1096:44 1094:. 1090:. 1067:. 1057:. 1045:. 1041:. 936:. 928:. 918:70 916:. 893:. 885:. 875:25 873:. 850:. 840:63 838:. 815:. 805:. 770:. 758:40 756:. 752:. 729:. 721:. 711:47 709:. 663:. 652:^ 638:. 628:. 616:15 614:. 610:. 587:. 577:44 575:. 519:. 497:. 487:. 477:31 475:. 471:. 448:. 438:. 426:13 424:. 420:. 384:. 337:. 281:, 251:, 227:A 176:. 168:, 164:, 1327:: 1300:: 1273:e 1266:t 1259:v 1198:- 1188:D 1165:. 1151:: 1124:. 1102:: 1075:. 1053:: 1026:. 969:. 944:. 924:: 901:. 881:: 858:. 846:: 823:. 801:: 778:. 764:: 737:. 717:: 693:. 646:. 622:: 595:. 583:: 560:. 535:. 505:. 483:: 456:. 432:: 405:. 355:(

Index

immunoglobulin
phospholipids
proteins
misnomer
prothrombotic
partial thromboplastin time
C. Lockard Conley
lupus erythematosus
kidney failure
in vitro
in vivo
procoagulant
activated protein C resistance
TFPI
Annexin
endothelial
trophoblast
antiphospholipid syndrome
thrombosis
arteries
veins
miscarriage
stillbirth
preterm delivery
preeclampsia
anti-apolipoprotein antibodies
anti-cardiolipin antibodies
aPTT
aPTT
differential diagnosis

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