Analysis |
Time and frequency |
Explanation/Please note |
Blood group, if applicable with rhesus characteristics |
At first medical examination, if not already known |
In rhesus-negative women, an anti-D prophylaxis should be carried out in the 28th to 30th week of pregnancy.
Women with Dweak (attenuated D-antigen) are deemed D-positive and thus do not receive anti-D prophylaxis. Contrary to the previous term Du, carriers of Dweak, both donor and receiver, are seen as rhesus-positive, as they possess a weak but complete D. |
Antibody screening test for irregular antibodies |
At first medical examination and between 24th and 27th week of pregnancy |
In case of a positive antibody screening test, further tests for blood group antigens of the mother and possibly the father could be indicated. |
Rubella IgG and if applicable IgM (to rule our an infection) |
At first medical examination, in case of missing or not definite immune protection again between 16th and 17th week of pregnancy |
IgG titer determination if no 2 vaccinations are documented. Control test with a second, different test system in case of borderline titers (5 IU/ml – 9,9 IU/ml) |
Chlamydia trachomatis |
Between 4th and 8th week of pregnancy, or as early as possible |
PCR determination from cervical swab |
Lues screening test |
4th to 8th week of pregnancy |
A positive result must be verified with additional tests (TPPA, IgG- und 19S-IgM-FTA-ABS test, RPR/VDRL test, if applicable also Immunoblot) |
Small blood count |
Hemoglobin concentration at determination of pregnancy, 4-weekly from the 21st week of pregnancy and 6-8 weeks postpartum |
In case of a hemoglobin concentration < 11,2 g/dl, further tests such as ferritin, folic acid, vitamin B12 are recommended in each trimester |
Urine status |
At first medical examination, then every 4 weeks and 6-8 weeks postpartum |
|
Hepatitis B antigen |
After the 32nd week of pregnancy, as close to the due date as possible |
Not applicable in case of proven immunity (anti-HBs) |