About
Method – Next-Generation Sequencing (NGS). DNAHope – Twin is a specialized Non-Invasive Prenatal Testing (NIPT) designed to detect chromosomal abnormalities in twin pregnancies. The test assesses the risk of trisomy 21 (Down syndrome), trisomy 18 (Edwards syndrome), trisomy 13 (Patau syndrome), as well as sex chromosome aneuploidies in both fetuses. The test is based on the analysis of cell-free fetal DNA (cfDNA) circulating in the mother's blood plasma, without the need for invasive procedures. This test is particularly valuable for twin pregnancies, where chromosomal abnormalities are often more difficult to detect using conventional screening methods. The accuracy and sensitivity of the test remain high even with two fetuses, providing doctors and parents with crucial information for managing a higher-risk pregnancy. What's included in the DNAHope – Twin panel: Analysis of the most common trisomies: 21, 18, and 13 Fetal sex determination (optional, can be shown or hidden) Follow-up testing (karyotyping) if the results indicate high risk
Bruising (hematoma) after a blood test
Blood collection is a routine procedure, but it may sometimes cause bruising at the puncture site.
During venous blood collection both the skin and the vein are punctured. When the needle is removed, blood can leak into the surrounding tissue – especially if the pressure in the vein is high – and a hematoma (bruise) may form.
Contributing factors include the body's physiological and anatomical features: the condition of the veins and vessels, their thickness and elasticity, position and visibility.
How to avoid bruising
- Press firmly on the puncture site for 5–10 minutes.
- Keep the plaster on for at least 30 minutes.
- Avoid straining the arm – don't lift anything heavy for an hour and don't drive for the first 15–20 minutes after the draw. Even minor activity can lead to extensive bruising and swelling around the site.
