Pregnancy test strips

Early pregnancy test strips are a product that is convenient for women to check whether they are pregnant. It is only used as an initial screening test and may result in positive or false negative results. Instructions for use: Place urine in the test hole on the test paper. If a printed color band appears in the comparison area of ​​the test paper (some test papers appear bright red, and some test papers appear dark blue), it indicates a negative result, indicating that you are not pregnant. On the contrary, if a significant printed color band appears in the test area, it indicates a positive result, indicating that you are already pregnant.

The basic principle of early pregnancy test paper

The detection reagent uses the basic principle of the immunochromatographic double-antigen sandwich chocolate method to make HCG detection test strips, which can measure HCG in urine samples within 3 minutes. During the test, when the urine sample is siphoned and passed through the colloidal gold labeled antigen, antigen and antibody colloidal gold nitric oxide synthase are produced, and the nitric oxide synthase crawls again, and passes through the coated anti-HCGα subunit Mcab, a double antigen sandwich chocolate colloidal gold nitric oxide synthase is produced, and a printed color band is displayed at the coated line. Excess colloidal gold antigen crawls again and produces a colloidal gold immune complex with the sheep anti-mouse comparison line, displaying a printed color band. The HCG colloidal gold diagnostic kit uses a double-antigen sandwich chocolate one-step technology, with colloidal gold as the marker, to test the HCG concentration in urine to diagnose whether a woman is pregnant. The test paper is a reliable indicator to help clinical medicine determine pregnancy.

Human chorionic gonadotropin (HCG) is a glycoprotein hormone produced by the embryo of a pregnant woman. The early pregnancy test paper uses double-antigen sandwich chocolate one-step technology, with colloidal gold as the marker, to test the HCG concentration in the urine to diagnose whether a woman is pregnant.

Early pregnancy test urine sample

1 This experimental reagent uses human urine as the test sample.

2. Use a clean container to collect urine. Urine within one day can be tested. It is recommended to use urine from the morning.

3 After collecting urine, if it cannot be used immediately, it should be placed in the refrigerator for 6-8 hours.

Early pregnancy test paper method

1. Use a disposable urine cup or clean container to collect urine.

2. Tear off the aluminum foil bag along the wound position and remove the test paper for inspection.

3. Strip form: Place the end of the test paper with the arrow mark into the container containing the urine sample to be tested.

(The urine sample is not allowed to exceed the MAX line), remove it and place it after about 3 seconds. (As shown below)

Three-in-one: Use a plastic pipette to draw 0.2mL (3-4 drops) of urine sample to be tested into the sample addition area.

Pen type: Remove the cap and let the urine immediately drip onto the sample adding area while urinating, and keep the urine collecting time for about 3 seconds (it is important to note that the urine does not need to exceed the arrow symbol to prevent the urine from wetting the test area and affecting the test results).

4. Observe the test results in the testing area: Observe the test results within 5-10 minutes. Coloring within 40 seconds is strongly positive.

Positive: Printed color bands appear above and below the test strip, indicating pregnancy.

Negative: Only a dark purple band appears above the test strip and no color band appears below, indicating no pregnancy.

Failed: No color band appears. Indicates that the test strip is invalid.

Early pregnancy test results

Early pregnancy test paper

1. Negative: A dark purple line (comparison line C) appears in the test area, indicating that you are not pregnant.

2. Positive: Two dark purple lines (comparison line C and detection line T) appear in the detection area, indicating pregnancy. The color intensity of the test line at different stages of pregnancy changes with the change of HCG concentration.

3. Failure: If no dark purple line appears in the test area or only one dark purple line (test line T) appears in the test area, it means that the test is unsuccessful or the test paper fails and should be tested again.