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224 Possible Causes for C4 Decreased

  • Angioedema

    Laboratory testing is significant for decreased C4 and C1 inhibitor levels as well as normal C1q levels.[step2.medbullets.com] The first test measures a person’s C4 serum level. C4 levels are decreased during attacks and typically remain low between attacks.[health.ucsd.edu] All patients in which hereditary angioedema type I or II are suspected should be assessed for a decrease of C4, C1 INH protein and C1 INH function levels.[clinicaladvisor.com]

  • Hereditary Angioedema Type 1

    ) Decreased levels suggest hereditary angioedema Confirm with repeat testing of C1-INH and C4 If family history present, consider functional testing for typing Functional[arupconsult.com] The first test measures a person’s C4 serum level. C4 levels are decreased during attacks and typically remain low between attacks.[health.ucsd.edu] Measure complement levels; low levels of C4 and decreased C1 inhibitor function indicate hereditary angioedema or acquired C1 inhibitor deficiency.[msdmanuals.com]

  • Hereditary Angioedema

    ) Decreased levels suggest hereditary angioedema Confirm with repeat testing of C1-INH and C4 If family history present, consider functional testing for typing Functional[arupconsult.com] Measure complement levels; low levels of C4 and decreased C1 inhibitor function indicate hereditary angioedema or acquired C1 inhibitor deficiency.[msdmanuals.com] […] or pharynx Family history of angioedema Unexplained episode of laryngeal edema Laboratory Testing Initial testing Complement 1 esterase inhibitor (C1-INH), complement 4 (C4[arupconsult.com]

  • Hereditary Angioedema Type 2

    ) Decreased levels suggest hereditary angioedema Confirm with repeat testing of C1-INH and C4 If family history present, consider functional testing for typing Functional[arupconsult.com] Measure complement levels; low levels of C4 and decreased C1 inhibitor function indicate hereditary angioedema or acquired C1 inhibitor deficiency.[merckmanuals.com] Laboratory testing is significant for decreased C4 and C1 inhibitor levels as well as normal C1q levels.[medbullets.com]

  • Pseudomonas

    […] production in N-butanoyl-L-homoserine lactone levels (C4-HSL).[bmcgenomics.biomedcentral.com] […] unable to produce the Pseudomonas Quinolone Signal (PQS, 2-heptyl-3-hydroxy-4-quinolone) and N-(3-oxododecanoyl)-L-homoserine lactone (3-oxo-C12-HSL), while showing a marked decreased[bmcgenomics.biomedcentral.com]

  • Obstructive Jaundice

    RESULTS: After drainage, the levels of complement 3 (C3) and complement 4 (C4) were increased.[ncbi.nlm.nih.gov] Forteen days post-operation, the levels of immunoglobulin G (IgG), immunoglobulin A (IgA) and immunoglobulin M (IgM) in the group undergoing palliative surgery decreased significantly[ncbi.nlm.nih.gov]

  • Hereditary Angioedema Type 3

    ) Decreased levels suggest hereditary angioedema Confirm with repeat testing of C1-INH and C4 If family history present, consider functional testing for typing Functional[arupconsult.com] Measure complement levels; low levels of C4 and decreased C1 inhibitor function indicate hereditary angioedema or acquired C1 inhibitor deficiency.[merckmanuals.com] Laboratory testing is significant for decreased C4 and C1 inhibitor levels as well as normal C1q levels.[medbullets.com]

  • Hypothyroidism

    Three proteins were decreased in abundance in the hypothyroid vs. euthyroid state: complement factor H, paraneoplastic antigen-like protein 6A, and α-2-macroglobulin.[ncbi.nlm.nih.gov] […] proteins were more abundant in the hypothyroid vs. euthyroid state: complement C2, serotransferrin, complement C3, Ig κ chain C region, α-1-antichymotrypsin, complement C4[ncbi.nlm.nih.gov]

  • Tenosynovitis of the Wrist

    Reproduction of pn with movement of the cervical spine): [16] • Dermatomes (C4- T1) • Myotomes (C4- T1) • Reflexes (C5, C6, C7) • Pathological (Hoffman’s) *Identify if there[physio-pedia.com] […] is any involvement with the CNS, Possible decreased sensation of skin innervated by superficial radial sensory nn (dorsal aspect of the thumb and index finger), Take note[physio-pedia.com]

  • Acquired Angioedema

    RESULTS: In both patients, CH50 and C4 activities were decreased, and an autoantibody to C1 inhibitor was detected.[ncbi.nlm.nih.gov] ) Decreased levels suggest hereditary angioedema Confirm with repeat testing of C1-INH and C4 If family history present, consider functional testing for typing Functional[arupconsult.com] Measure complement levels; low levels of C4 and decreased C1 inhibitor function indicate hereditary angioedema or acquired C1 inhibitor deficiency.[merckmanuals.com]

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