answersLogoWhite

0


Best Answer

There are no specific quantitative values for the separate parts of the First Trimester screen. (Double Marker Test). This is a screening too, used to assess risk factors.

The test is most accurate between the 16th week and the 18th week and the correct fetal age is mandatory for accurate testing.

The blood screen measures two pregnancy related hormones: hCG and PAPP-A.

The ultrasound evaluation measures nuchal translucency (fluid beneath the skin behind baby's neck).

You will be told whether your results are "normal or abnormal", and you will be given a risk level by your genetic counselor/OB. The counselor will give you your risk factor for chromosomal abnormalities based on the test results (for example 1/250, 1/1300).

A positive test means that you have a 1/100 to 1/300 chance of experiencing one of the abnormalities. Using a maternal blood screening test with an ultrasound evaluation of the fetus to identify risk for specific chromosomal abnormalities, including Down's Syndrome Trisomy-21 and Trisomy-18.

When the test results come back in the typical range, this result reduces the woman's risk of having a child with Down syndrome.

If the woman is 25, this decreases her risk from 1/1100 to 1/4400.

If the woman is 35 years old, this decreases her risk from 1/250 to 1/1000.

If the woman is 45, it decreases her risk from 1/20 to 1/80.

85 out of 100 babies affected by the abnormalities the screen tests for will be identified.

5% of the tests will be false positive.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What are the rates for double marker test?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How is the Double Marker Test in Pregnancy done?

Double marker test is done by blood test.


Where in kolkata can a double marker test be done?

apollo clinic


What are the normal values of double marker test?

The normal values of double marker test is 1:60. This basically means that a given patient is at a lower risk of getting the Down's Syndrome.


What is a triple marker test?

Ghanta


Where and What are Marker Lights?

Turn signal lights that double as parking (marker lights) when not blinking.


How do you set a marker on the world map in runecsape?

Go to world map and double click where you want your marker to be.


What is the meaning of -ceas?

carcinoembryonic antigen, it is a tumor marker test.


How much blood is needed for a tumor marker test?

Tumor marker tests usually require 5-10 mL of blood.


When should double marker test be done in pregrancy?

this is used for early detection of pre-birth conditions especially to detect any genetic disorders including the trisomy of the 13th, 18th, and 21st chromosome. It'll conduct from 9 to 14th weeks of gestation. This test can be done in metro cities or big laboratories. It'll cost / rates around Rs.2100/- and reported after 1 week.


Is Tiffa Scan required when triple marker test is normal and What are the chances that tiffa scan will be normal when triple marker test is normal?

Tripple Marker Test is only for down's syndrome, where as TIFFA scan is used to check for all anomalies. TIFFA is the acronoym for "Targeted Imaging for. Fetal Anomalies". It covers a wide area compared to Tripple marker which is only for down's syndrome. In short, Yes TIFFA scan is required and there is no guarantee that TIFFA should be normal when Tripple Marker is normal.


Why dual marker test during pregnancy?

This test detects any kind of chromosomal abnormalities that might occur after the conception occurs.Characteristics of Down's SyndromePeople who have Down syndrome have slight to severe abnormalities - Eyes can incline upwards and outwardsA single crease can be seen running across the palm of the personSmall handsLow set earsProne to certain medical conditions like heart problems, defects in the digestive tract and sight and hearing problemsCause learning disabilityLife span is lessIt is advisable that all pregnant women should go through this test so that she is sure that the baby is completely normal.Advantages of Double Marker TestIt gives you time to think and consult your doctor for another advanced test if your baby is detected with Down's syndrome.You can go through the diagnostic test if double marker tests turn positive.You have good detection rates.If your fetus is reported positive after the screening test and you go for a diagnostic test finding it to be true, you can go for pregnancy termination. If this test is done earlier the complications of termination will be less and you can even choose to end your pregnancy through suction termination.Disadvantages of Double Marker TestIt is expensive and unaffordable for many.It is available in selected cities only.


What is the Significance of H antigen in salmonella?

Marker for Widal Test carried out for the detection of Salmonella