Obstetrics Book


Modified Apt Test

Aka: Modified Apt Test
  1. Indications
    1. Assess for Vasa Previa in Late Pregnancy Bleeding
  2. Mechanism
    1. Differentiates Fetal from Maternal Blood
  3. Technique
    1. Collect bloody vaginal fluid
    2. Add a small amount of tap water (Hemolyzes blood)
    3. Centrifuge sample
    4. Add 5 cc pink supernatant to 1 cc Sodium Hydroxide 1%
    5. Read in 2 minutes (may be difficult)
      1. Pink sample indicates fetal Hemoglobin
      2. Yellow-Brown sample indicates adult Hemoglobin

You are currently viewing the original 'fpnotebook.com\legacy' version of this website. Internet Explorer 8.0 and older will automatically be redirected to this legacy version.

If you are using a modern web browser, you may instead navigate to the newer desktop version of fpnotebook. Another, mobile version is also available which should function on both newer and older web browsers.

Please Contact Me as you run across problems with any of these versions on the website.

Navigation Tree