{"product_id":"complement-4-c4-level-serum","title":"Complement 4 (C4) Level, Serum","description":"\u003ch2 data-section-id=\"1f5ru17\" data-start=\"0\" data-end=\"33\"\u003eComplement 4 (C4) Level, Serum\u003c\/h2\u003e\n\u003ch3 data-section-id=\"1dvy39q\" data-start=\"35\" data-end=\"67\"\u003eComplement 4 (C4) Level Test\u003c\/h3\u003e\n\u003cp data-start=\"68\" data-end=\"449\"\u003eThe \u003cstrong data-start=\"72\" data-end=\"106\"\u003eComplement 4 (C4) Level, Serum\u003c\/strong\u003e test measures the amount of Complement C4 protein in the blood. C4 is part of the complement system, a group of proteins that support the immune system in fighting infections, clearing damaged cells, and regulating inflammation. This test is commonly used to evaluate autoimmune disorders, inflammatory conditions, and immune system activity.\u003c\/p\u003e\n\u003ch3 data-section-id=\"so7jdh\" data-start=\"451\" data-end=\"477\"\u003eWhy is this test done?\u003c\/h3\u003e\n\u003cp data-start=\"478\" data-end=\"519\"\u003eDoctors may recommend a C4 Level test to:\u003c\/p\u003e\n\u003cul data-start=\"520\" data-end=\"777\"\u003e\n\u003cli data-section-id=\"1xxcm4z\" data-start=\"520\" data-end=\"600\"\u003eDiagnose and monitor autoimmune diseases such as lupus or rheumatoid arthritis\u003c\/li\u003e\n\u003cli data-section-id=\"we1rdo\" data-start=\"601\" data-end=\"655\"\u003eEvaluate recurrent infections or immune deficiencies\u003c\/li\u003e\n\u003cli data-section-id=\"1a9q2ia\" data-start=\"656\" data-end=\"687\"\u003eAssess inflammatory disorders\u003c\/li\u003e\n\u003cli data-section-id=\"13ngquj\" data-start=\"688\" data-end=\"719\"\u003eMonitor hereditary angioedema\u003c\/li\u003e\n\u003cli data-section-id=\"4eelou\" data-start=\"720\" data-end=\"777\"\u003eInvestigate kidney diseases related to immune disorders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"15pau6r\" data-start=\"779\" data-end=\"816\"\u003eSymptoms that may require testing\u003c\/h3\u003e\n\u003cul data-start=\"817\" data-end=\"959\"\u003e\n\u003cli data-section-id=\"1n3rh0\" data-start=\"817\" data-end=\"841\"\u003eJoint pain or swelling\u003c\/li\u003e\n\u003cli data-section-id=\"18362v4\" data-start=\"842\" data-end=\"862\"\u003ePersistent fatigue\u003c\/li\u003e\n\u003cli data-section-id=\"1l9t7pl\" data-start=\"863\" data-end=\"876\"\u003eSkin rashes\u003c\/li\u003e\n\u003cli data-section-id=\"18vje9q\" data-start=\"877\" data-end=\"899\"\u003eRecurrent infections\u003c\/li\u003e\n\u003cli data-section-id=\"1foqnl0\" data-start=\"900\" data-end=\"926\"\u003eUnexplained inflammation\u003c\/li\u003e\n\u003cli data-section-id=\"16qvqqk\" data-start=\"927\" data-end=\"959\"\u003eSwelling episodes (angioedema)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"11twy89\" data-start=\"961\" data-end=\"980\"\u003eSample Required\u003c\/h3\u003e\n\u003cul data-start=\"981\" data-end=\"1082\"\u003e\n\u003cli data-section-id=\"q8h3v4\" data-start=\"981\" data-end=\"1005\"\u003e\n\u003cstrong data-start=\"983\" data-end=\"999\"\u003eSample Type:\u003c\/strong\u003e Serum\u003c\/li\u003e\n\u003cli data-section-id=\"ghy395\" data-start=\"1006\" data-end=\"1082\"\u003e\n\u003cstrong data-start=\"1008\" data-end=\"1024\"\u003ePreparation:\u003c\/strong\u003e Usually no fasting required unless advised by your doctor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"72eny9\" data-start=\"1084\" data-end=\"1110\"\u003eNormal Reference Range\u003c\/h3\u003e\n\u003cp data-start=\"1111\" data-end=\"1200\"\u003eReference values may vary slightly between laboratories, but typical serum C4 levels are:\u003c\/p\u003e\n\u003cul data-start=\"1201\" data-end=\"1220\"\u003e\n\u003cli data-section-id=\"1282kcz\" data-start=\"1201\" data-end=\"1220\"\u003e\u003cstrong data-start=\"1203\" data-end=\"1220\"\u003e10 – 40 mg\/dL\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"ffr8ap\" data-start=\"1222\" data-end=\"1251\"\u003eUnderstanding the Results\u003c\/h3\u003e\n\u003ch4 data-start=\"1252\" data-end=\"1284\"\u003eLow C4 Levels may indicate:\u003c\/h4\u003e\n\u003cul data-start=\"1285\" data-end=\"1418\"\u003e\n\u003cli data-section-id=\"rk0d7q\" data-start=\"1285\" data-end=\"1321\"\u003eSystemic Lupus Erythematosus (SLE)\u003c\/li\u003e\n\u003cli data-section-id=\"677ka7\" data-start=\"1322\" data-end=\"1343\"\u003eAutoimmune diseases\u003c\/li\u003e\n\u003cli data-section-id=\"g2kvbm\" data-start=\"1344\" data-end=\"1367\"\u003eChronic liver disease\u003c\/li\u003e\n\u003cli data-section-id=\"pnelqf\" data-start=\"1368\" data-end=\"1391\"\u003eHereditary angioedema\u003c\/li\u003e\n\u003cli data-section-id=\"nkpzyx\" data-start=\"1392\" data-end=\"1418\"\u003eCertain kidney disorders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 data-start=\"1420\" data-end=\"1453\"\u003eHigh C4 Levels may indicate:\u003c\/h4\u003e\n\u003cul data-start=\"1454\" data-end=\"1532\"\u003e\n\u003cli data-section-id=\"1slvscf\" data-start=\"1454\" data-end=\"1474\"\u003eAcute inflammation\u003c\/li\u003e\n\u003cli data-section-id=\"k28h5y\" data-start=\"1475\" data-end=\"1495\"\u003eCertain infections\u003c\/li\u003e\n\u003cli data-section-id=\"dlim9p\" data-start=\"1496\" data-end=\"1517\"\u003eMetabolic disorders\u003c\/li\u003e\n\u003cli data-section-id=\"v774rb\" data-start=\"1518\" data-end=\"1532\"\u003eSome cancers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"cd82tg\" data-start=\"1534\" data-end=\"1558\"\u003eBenefits of the Test\u003c\/h3\u003e\n\u003cul data-start=\"1559\" data-end=\"1747\"\u003e\n\u003cli data-section-id=\"1pr11wt\" data-start=\"1559\" data-end=\"1601\"\u003eHelps detect immune system abnormalities\u003c\/li\u003e\n\u003cli data-section-id=\"1xwfe7h\" data-start=\"1602\" data-end=\"1645\"\u003eAssists in diagnosing autoimmune diseases\u003c\/li\u003e\n\u003cli data-section-id=\"4fdw7i\" data-start=\"1646\" data-end=\"1709\"\u003eUseful for monitoring disease activity and treatment response\u003c\/li\u003e\n\u003cli data-section-id=\"ppb1ll\" data-start=\"1710\" data-end=\"1747\"\u003eSupports early medical intervention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Lifecell Diagnostics","offers":[{"title":"Default Title","offer_id":44007232045191,"sku":null,"price":490.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0691\/4241\/3447\/files\/14f025a7-ebbd-4592-916a-e457878fb22e.png?v=1778480399","url":"https:\/\/ourdermastore.com\/products\/complement-4-c4-level-serum","provider":"Ourdermastore ","version":"1.0","type":"link"}