What does a positive Amnisure test mean?

What does a positive Amnisure test mean?

The Amnisure ROM™ test is approved for the diagnosis of rupture of membranes (ROM). Yet, a fraction of patients with a positive test have intact membranes by sterile speculum examination.

What does Amnisure negative mean?

One visible line means a negative result for amniotic fluid, two visible lines is a positive result, no visible lines is an invalid result).

How do you perform Amnisure?

Procedure

1. Collect sample of vaginal discharge with sterile collection swab (no speculum required).
2. Rinse specimen swab in solvent vial. Discard swab.
3. Insert amniotic fluid test strip into vial and remove if 2 lines are visible, or at 10 minutes sharp.
4. Results are observed and recorded.

How do you assess a membrane rupture?

This test involves putting a drop of fluid obtained from the vagina onto paper strips containing Nitrazine dye. The strips change color depending on the pH of the fluid. The strips will turn blue if the pH is greater than 6.0. A blue strip means it’s more likely the membranes have ruptured.

What Does fetal fibronectin indicate?

Fetal fibronectin (fFN) is used to test pregnant women who are between 22 weeks and 35 weeks of pregnancy and are having symptoms of premature labor. The test helps predict the likelihood of premature delivery within the next 7-14 days.

What causes false positive Nitrazine test?

Nitrazine test may also lead to false positive or negative results due to probable contamination by alkaline urine, semen, blood, meconium, vaginitis, cervicitis and using antibiotics.

Can you get a false positive AmniSure?

Amnisure does have a high false positive rate, noted to be 19-30% in patients who were later found to have intact membranes by clinical measures, including negative pooling, arborization, and nitrizine.

When can AmniSure be done?

Amnisure is now approved for use at any gestational age. Kits may be used until printed expiration date. Once AmniSure Test Strip is removed from foil pouch, it must be used within 6 hours. specifications.

Can you use lubricant with AmniSure?

AmniSure can be used in the presence of semen, minimal amounts of blood, vaginal infection, after intercourse, after a vaginal examination, and in the presence of a minimal amount of water-based lubricant.

How accurate is Amnisure?

Amnisure has been extensively studied, and is a great tool to detect rupture of membranes. Multiple studies have shown sensitivity of 99%, with high positive and negative predictive values.

What can cause a false positive fetal fibronectin test?

A false – positive test may result from: 1) digital examination prior to the speculum exam, 2) more than a minimal amount of blood in the specimen as FFN is in plasma, 3) the presence of amniotic fluid (which contains FFN) in the specimen, or 4) the patient having had intercourse within the previous 24 hours (FFN can …

What is a positive fetal fibronectin result?

Results of the fetal fibronectin test are either positive or negative: Positive. A positive result means that fetal fibronectin is present in your cervical secretions. If you have a positive result between weeks 22 and 34, you’re at increased risk of premature birth within seven days.

What is the clinical significance of a positive amnisure test?

The Amnisure ROM™ test is approved for the diagnosis of rupture of membranes (ROM). Yet, a fraction of patients with a positive test have intact membranes by sterile speculum examination. The objective of this study was to determine the clinical significance of this finding.

How does the amnisure ROM test provide quality control?

QUALITY CONTROL The AmniSure ROM Test contains an internal control mechanism that ensures the analytic portion of the test is functional. The appearance of one or two lines in the test results region of the test strip verifies the integrity of the test procedure and components.

How to test for rupture of the amnisure membrane?

Procedure 1 Collect sample of vaginal discharge with sterile collection swab (no speculum required). 2 Rinse specimen swab in solvent vial. Discard swab. 3 Insert amniotic fluid test strip into vial and remove if 2 lines are visible, or at 10 minutes sharp. 4 Results are observed and recorded.

Can a vaginal infection interfere with the amnisure ROM test?

INTERFERENCE STUDIES Vaginal infections, urine, semen, or insignicant blood admixtures do not interfere with the results of the AmniSure ROM Test. BIBLIOGRAPHY