Qaytarish

Gepatit B virusi (HBV) uchun prenatal skrining, HBsAg

Kod:17011|CPT:87340|LOINC:5196-1, 7905-3

Sinonimlar
Поверхностный антиген вируса гепатита В.HBsAgHepatitis B surface antigenHepatitis B virus surface antigen
KabiHBsAg skriningi

Tahlil ma'lumotlari

Tadqiqot usuli

  • Immunokimyoluminometrik analiz (ICMA)
  • Immunoanaliz

Kutilayotgan natija topshirish vaqti

1 kun

Maxsus tayyorlik

  • Discontinue high-dose biotin supplements for at least 72 hours before the blood draw.
  • Inform the care team about any biotin use (vitamin B7/B8, vitamin H, coenzyme R) before testing.
  • Do not smoke for 30 minutes before specimen collection.

Qanday foydalanish

Gepatit B virusi (HBV) uchun prenatal skrining, HBsAg (gepatit B yuzaki antigeni) homiladorlik davrida HBV infeksiyasini aniqlash, perinatal yuqish xavfi ostidagi chaqaloqlarni aniqlash va boshqarish uchun qo‘llanadi. Prenatal yordamdan tashqarida, HBsAg skriningi xavf guruhlaridagi asimptomatik shaxslarga va qon donorlarga tatbiq etiladi. Shubha qilingan o‘tkir yoki surunkali HBV ni diagnostik baholashda HBsAg boshqa markerlar bilan birga talqin qilinadi, jumladan gepatit B yadroviy antigeniga qarshi antitanalar (anti-HBc), gepatit B e antigeni (HBeAg) va HBV DNK. Ushbu test holatlarni aniqlash hamda populyatsiyaga asoslangan yoki jamoat salomatligi skrining algoritmlarini qo‘llab-quvvatlaydi.

Cheklovlar

Gepatit B — HBV sababli yuzaga keladigan jigar infeksiyasi bo‘lib, yuqtirilgan qon yoki tana suyuqliklari bilan aloqa orqali, shu jumladan tug‘ruq atrofida onadan chaqaloqqa yuqishi orqali uzatiladi. Gepatit B yuzaki antigeni (HBsAg) ushbu test aniqlaydigan virusning yuzaki oqsili bo‘lib, davom etayotgan infeksiyaning bevosita belgisi hisoblanadi. HBsAg odatda HBV yuqtirilganidan so‘ng taxminan 3–5 hafta o‘tgach, inkubatsiya davri yakuniga yaqin aniqlanadi va o‘tkir faza davomida saqlanadi. HBsAg ning olti oydan ortiq saqlanishi surunkali infeksiya bilan mos keladi. HBsAg ning noreaktiv natijasi, agar antigen konsentratsiyasi testning aniqlash chegarasidan past bo‘lsa yoki antigenik variantlar tanilmasa, o‘tkir gepatit B ni inkor etmaydi. Shubha qilingan HBV ni baholash faqat HBsAg ga tayanmasligi kerak; qo‘shimcha markerlar — jumladan anti-HBc va HBV DNK — infeksiya bosqichini va yuqumliligini aniqlash uchun qo‘llanadi.

O'lchov birligiqualitative
Referens oraliq
MinMaks
00.05
Ko'rsatmalarSigns consistent with acute hepatitis, including jaundice, Healthcare workers or others with occupational risk of needlestick or blood exposure, Birth in countries or regions with intermediate to high HBV endemicity, No documented hepatitis B vaccination, Household members, sexual partners, or first-degree relatives of a person with HBV infection, Unexplained elevation of alanine aminotransferase (ALT) or aspartate aminotransferase (AST), Immunocompromised state, Pregnancy—prenatal screening, Known HIV infection, Monitoring in chronic hepatitis B (every 6–12 months), Screening prior to transfusion

Natija og'ishlarining mumkin sabablari

Pasaygan daraja

  • biotin (high-dose supplementation)

Namunangiz talablari

NamunangizZardob
ContainerOltin/yo'lbars qopqoqli probirka (SST, gel ajratgich)
Hajm3.5 mL (min 1.5 mL)
Saqlash tayyorlikXona harorati, Sovutilgan, Muzlatilgan

References

Abara WE, Oaseem A, Schillie S. McMahon BJ, Harris AM, High Value Care Task Force of the American College of Physicians and the Centers for Disease Control and Prevention. Hepatitis B Vaccination, Screening, and Linkage to Care: Best Practice Advice from the American College of Physicians and the Centers for Disease Control and Prevention. Ann Intern Med. 2017 Dec 5;167(11):794-804. PubMed 29159414

Centers for Disease Control and Prevention. Hepatitis B. CDC web site: www.cdc.gov/hepatitis/hbv/index.htm. Accessed May 2021.

Centers for Disease Control and Prevention; The American Colllege of Obstetrics and Gynecologists. Screening Pregnant Women for Hepatitis B Virus (HBV) Infection and Screening and Referral Algorithm for Hepatitis B Virus (HBV) Infection Among Pregnant Women. CDC web site: https://www.cdc.gov/hepatitis/hbv/pdfs/PrenatalHBsAgTesting.pdf. Accessed June 2021.

Schillie S, Vellozzi C, Reingold A, et al. Prevention of Hepatitis B Virus Infection in the United States. Recommendations of the Advisory Committee on Immunization Practices. MMWR Recomm Rep. 2018 Jan 12;67(1):1-31. PubMed 29939980