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Anti hbc

Manufactured by Abbott
Sourced in United States, Germany

The Anti-HBc is a laboratory test used to detect the presence of antibodies to the hepatitis B core antigen (HBcAg) in the blood. This test is used as a diagnostic tool to determine if a person has been exposed to and developed an immune response to the hepatitis B virus.

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8 protocols using anti hbc

1

Quantitative assessment of hepatitis B

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The reagent kits of HBsAg, anti-HBs, HBeAg, anti-HBe and anti-HBc were purchased from Abbott Laboratories in Chicago, IL, USA (HBsAg: Cat# 6C36, Lot No. 24052FN01; anti-HBs: Cat# 7C18, Lot No. 23294FN00; HBeAg: Cat# 6C32, Lot No. 23193BE01; anti-HBe: Cat# 6C34, Lot No. 24005BE01; anti-HBc: Cat# 6C33, Lot No. 24324BE01). Serum HBV DNA level was quantified using the HBV PCR Fluorescence Quantitative Detection Kit from Tianlong Bio-technology in Suzhou, China (Cat# 6C34, Lot No. P1372104001), with 500 IU/mL as the lower limit of detection. ALT was quantified using the Alanine Aminotransferase Test Kit from Ruiyuan Bio-technology in Ningbo, China (Cat# 1040-717, Lot No. 2020100902). CELLPACK DCL from Beckman-Coulter Experimental System in Suzhou, China (Cat# 628020, Lot No. 2010141) was used to test blood cell analysis, including the absolute value of lymphocytes, absolute values of monocytes and absolute values of neutrophils.
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2

HBV Serological Markers and Liver Function

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HBV serological markers were analysed with the Architect Abbott system (HBsAg, Anti-HBc, HBeAg, and Anti-HBe; Abbott Diagnostics, Wiesbaden, Germany). Liver function was evaluated by alanine aminotransferase test (ULN = 40 UI/l). Serum HBV DNA level was quantified by COBAS TaqMan HBV test (Roche Diagnostic Systems Inc., Mannheim, Germany). The dynamic range of quantification is 10 1 to 10 8 IU/ml.
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3

HBV Serological Markers and Liver Function

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HBV serological markers were analysed with the Architect Abbott system (HBsAg, Anti-HBc, HBeAg, and Anti-HBe; Abbott Diagnostics, Wiesbaden, Germany). Liver function was evaluated by alanine aminotransferase test (ULN = 40 UI/l). Serum HBV DNA level was quantified by COBAS TaqMan HBV test (Roche Diagnostic Systems Inc., Mannheim, Germany). The dynamic range of quantification is 10 1 to 10 8 IU/ml.
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4

Comprehensive Viral Serological Profiling

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The participants’ serum was tested using the Abbott ARCHITECT® automated immunologic assay platform and commercially available ARCHITECT assay kits for HCV antibody (anti-HCV) and HCV core antigen (HCVcoreAg), hepatitis B surface antigen (HBsAg), hepatitis B e antigen (HBeAg), and hepatitis B core antibodies (anti-HBc) (Abbott Laboratories, USA). Specimens were initially screened for anti-HCV and HBsAg and with subsequent testing of reactive specimens for HCVcoreAg and HBeAg, respectively. Each run included standardized ARCHITECT® controls.
Blood specimens were tested for HIV per national guidelines: screening for HIV antibody using Genscreen Ultra HIV Ag/Ab (Bio-Rad, USA) with confirmation of positive tests by Determine HIV-1/2 (Alere, Japan) and Murex HIV Ag/Ab Combination (DiaSorin, United Kingdom of Great Britain and Northern Ireland) testing. The National Reference Laboratory at NIHE conducted external quality assurance on a randomly selected 10% of HIV-negative and 5% of HIV-positive screening samples.
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5

Serological and Molecular Screening for Viral Infections

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Serological examinations for Human immunodeficiency virus (HIV), Hepatitis B virus (HBc), Hepatitis C virus (HCV) and Treponema pallidum exposure were performed on Alinity s analyzer using following Alinity s assays: HIV Ag/Ab Combo, Anti-HBc, Anti-HCV and Syphilis reagent kit (Abbott, North Chicago, IL, USA). Direct detection of Human immunodeficiency virus, Hepatitis B virus, Hepatitis C virus in blood samples was performed on Cobas 6800 System with Roche Cobas MPX kit (Roche Diagnostics International AG, Rotkreuz, Switzerland). All assays and appliances were used according to manufacturer instructions.
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6

Quantitative Analysis of Hepatitis B Markers

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ALT and HBV markers [HBsAg, anti-HBs, HBV e antigen (HBeAg), anti-HBe and anti-HBc] were measured using a C1600 biochemical analyzer (Abbott Laboratories, Lake Bluff, IL, USA) and an i2000 immunoassay instrument (Abbott Laboratories), respectively. ALT (cat. no. GP6040) and HBV marker [HBsAg (cat. no. 6C36-32), anti-HBs (cat. no. 7C18-30), HBeAg (cat. no. 6C32-20), anti-HBe (cat. no. 6C34-20) and anti-HBc (cat. no. 8L44-30)] kits were purchased from Beijing Leadman Biochemistry Co., Ltd. (Beijing, China) and Abbott Laboratories, respectively. The linear range of HBsAg was between 0.05 and 250 IU/ml. If the HBsAg level was >250.0 IU/ml, the samples were serially diluted 1:100 to obtain a value within the linear range of the assay, according to the manufacturer's protocol.
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7

Hepatitis B and Delta Virus Serosurvey

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Dried blood spots were examined as described previously [18 (link)]. All three markers HBsAg, anti-HBc and anti-HBs tests (Abbott-Murex, United Kingdom) were performed according to the manufacturers’ instructions in 2160 individuals’samples. HBsAg-positive results were confirmed in the Murex HBsAg Confirmatory test, Version 3. HBsAg-positive samples from the 1985 (n = 84) and 2010 (n = 181) serum collections were screened for HDV with the anti-HDV total antibody test and HDAg detection tests (diaSorin, Italy).
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8

Hepatocellular Carcinoma and Chronic Liver Disease Serology

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We conducted a nested case-control study of HCC and CLD deaths within the biospecimen subcohort for serological markers of hepatitis B and C infection in blood samples of 210 cases (137 HCC cases and 73 CLD deaths) and 423 controls. All incident cases of HCC and CLD deaths with a pre-diagnostic blood sample were eligible for this case-control study. For each case, two control subjects matched to the index case by sex, race/ethnicity, study area (Hawaii or California), and age at blood draw, were selected from the biospecimen subcohort. Controls also had to be free of HCC on the date of cancer diagnosis or CLD death of the index case. The presence of HBsAg, anti-HBc, and anti-HCV (Architect Assays, Abbott Laboratories, North Chicago, IL) were tested blindly without regard to case-control status.
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