Type of test Blood

Normal findings

Possible critical values

 Evidence of susceptibility in pregnant women with recent exposure to rubella

Test explanation and related physiology

 Screening for rubella antibodies is done to detect immunity to rubella. These tests detect the presence of IgG and/or IgM anti bodies to rubella (the causative agent for German measles). They become elevated a few days to a few weeks after the onset of the rash, depending on what method of testing is used. IgM tends to disappear after about 6 weeks. IgG, however, persists at low but detectable levels for years. These antibodies become elevated in patients with active rubella infection or with past infections.

Children are vaccinated with rubella to prevent the effects of the disease and to minimize infection. Rubella testing documents immunity to rubella. Rubella immunity testing is suggested for all healthcare workers. Most importantly, however, it is done to verify the presence or absence of rubella immunity in pregnant women because congenital rubella infection in the first trimester of pregnancy is associated with congenital abnormalities of the fetus (heart defects, brain damage, deafness), abortion, or stillbirth. The term TORCH (toxoplasmosis, other, rubella, cytomegalovirus, herpes) has been applied to infections with recognized detrimental effects on the fetus. All of these tests are discussed separately (see separate listings).

If the woman’s titer is greater than 1:20, she is not susceptible to rubella. If the woman’s titer is 1:8 or less, she has little or no immunity to rubella. A fourfold increase in HAI rubella titer from the acute to the convalescent titer indicates that the rash was caused by an active rubella infection. Alternatively, an IgM antibody titer could be done. If the titer is positive, recent infection has occurred. IgM titers appear 1 to 2 days after onset of the rash and disappear 5 to 6 weeks after infection.

Antirubella antibody testing is also used to diagnose rubella in infants (congenital rubella). IgM antirubella antibodies cannot pass through the placenta. If an infant has IgM antibodies, acute congenital or newborn rubella is suspected. Antibody testing is often used in children with congenital abnormalities that may have come from congenital rubella infection.

Procedure and patient care

 • See inside front cover for Routine Blood Testing.

• Fasting: no

• Blood tube commonly used: red Inform the patient when to return for a follow-up HAI titer if indicated.

 Abnormal findings

- Active rubella infection

- Previous rubella infection leading to immunity

اخر الاخبار

اخبار العتبة العباسية المقدسة

المجمع العلمي يجري اختباره الشهري لطلبة الحفظ في المثنى

قسم الصناعات: اعتماد أعلى معايير الجودة في التنجيد والتأثيث لدعم البنية الخدمية في العتبة المقدسة

قسم الشؤون الفكريّة يصدر الجزء الخامس من سلسلة دراسات في المنهج

جامعة الكفيل تنظّم دورة عن أساسيات الدفاع المدني لملاكاتها

المزيد

الآخبار الصحية

العنب.. فاكهة صغيرة بمفعول "خارق" للقلب والدماغ

دراسة تحدد "الحلقة المفقودة".. تسبب ارتفاع ضغط الدم

هذه الأطعمة تحمي دماغك من الشيخوخة وتزيد حدة الذكاء

خبراء يحذرون من مخاطر "الدهون المخفية" على القلب

المزيد

الآخبار التكنلوجية

الأرصاد الجوية تلجأ إلى الذكاء الاصطناعي.. لأي غرض؟

في منزلك.. "تعديل بسيط" يخفض ضغط الدم بشكل طبيعي

"ميزة جديدة" من إنستغرام تنافس تيك توك.. طال انتظارها

غوغل في مأزق.. بيانات 2.5 مليار مستخدم بقبضة القراصنة

المزيد

مواضيع ذات صلة

semen analysis (Sperm count, Sperm examination)

ribosome P antibodies (Ribosomal P Ab, Anti–ribosome P antibodies)

Water Balance

Albuminuria

Proteinuria

rheumatoid factor (RF)

reticulocyte count (Retic count)

red blood cell indices (RBC indices, Blood indices)

NGAL

Biomarkers of Tubulo-Interstitial Injury

Low-Molecular-Weight Plasma Proteins

Immunofluorescence Assay (IFA)