Prenatal testing for human immunodeficiency virus (hiv) is recommended for:

Every physician, physician assistant, or nurse practitioner attending a pregnant patient during gestation shall examine and test such patient for syphilis, hepatitis B surface antigen (HBsAg), and any other sexually transmitted disease as clinically indicated within 15 days after beginning such attendance. A second prenatal test for syphilis and HBsAg shall be conducted at the beginning of the third trimester (28 weeks) for patients who are at higher risk for these diseases. Persons at higher risk for syphilis include those who have had multiple sexual partners within the previous year, those with any prior history of a sexually transmitted disease, and those living in communities and populations in which the prevalence of syphilis is high. Persons at higher risk for hepatitis B virus infection include injecting drug users and those with personal contact with a hepatitis B patient, multiple sexual partners, and/or occupational exposure to blood. If the patient first seeks care during the third trimester, only one test shall be required. As a routine component of prenatal care, every licensed practitioner who renders prenatal care, including any holder of a multistate licensure privilege to practice nursing, regardless of the site of such practice, shall inform every pregnant patient that human immunodeficiency virus (HIV) screening is recommended for all pregnant patients and that she will receive an HIV test as part of the routine panel of prenatal tests unless she declines (opt-out screening). The practitioner shall offer the pregnant patient oral or written information that includes an explanation of HIV infection, a description of interventions that can reduce HIV transmission from mother to infant, and the meaning of positive and negative test results. The confidentiality provisions of § 32.1-36.1 of the Code of Virginia and the test result disclosure conditions and appropriate counseling requirements of § 32.1-37.2 of the Code of Virginia shall apply to any HIV testing conducted pursuant to this section. The Centers for Disease Control and Prevention (CDC) recommends a second HIV test for patients who receive health care in jurisdictions with elevated incidence of HIV or AIDS among women aged 15 through 45 years, which includes Virginia. Practitioners should offer a second HIV test during the third trimester to all pregnant patients. Practitioners shall counsel all pregnant patients with HIV-positive test results about the dangers to the fetus and the advisability of receiving treatment in accordance with the then current CDC recommendations for HIV-positive pregnant patients. Any pregnant patient shall have the right to refuse testing for HIV infection and any recommended treatment. Documentation of such refusal shall be maintained in the patient's medical record.

Chou  R, Smits  AK, Huffman  LH, Korthuis  PT.  Screening for Human Immunodeficiency Virus in Pregnant Women: Evidence Synthesis No. 39. Rockville, MD: Agency for Healthcare Research and Quality; 2005.

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The requirements of pretest counseling and written informed consent are barriers to prenatal HIV testing in the United States , an Institute of Medicine (IOM) panel concluded in 1999. Therefore, the panel recommended that these requirements be eliminated and that prenatal HIV testing become a routine and universal part of prenatal care while still protecting the right of a woman to refuse testing if she chooses not to be tested, ie, "opts out."1 The American Medical Association, the American Academy of Pediatrics, and the American College of Obstetricians and Gynecologists have endorsed the IOM's recommendations.2 In 2001, the US Public Health Service (USPHS) issued revised guidelines for prenatal HIV testing that stopped short of the IOM recommendations.3 The Public Health Service advised health care providers to recommend HIV testing to all of their pregnant patients but embraced the requirement for specific written informed consent required by many states. The Health Service also noted, however, that if written consent is deemed a barrier and if state law permits, verbal consent may be enough to perform the test.3

Following widespread implementation of the USPHS guidelines, the number of HIV tests conducted in prenatal clinics in the United States has risen dramatically, resulting in a sharp decline in the number of perinatally acquired HIV infections.4 Despite the declines, cases of perinatal HIV transmission continue to occur, largely because of missed opportunities for HIV testing during pregnancy. The estimated 280-370 infants born with HIV infection each year represent populations in which prevention efforts are impeded by lack of timely HIV testing and treatment of pregnant women.5 These continued infections and changes in public attitude about HIV disease, along with the technological advances in the treatment of the infection, underscore the need for improved strategies that ensure testing of all pregnant women and, if results are positive, treatment to safeguard their health and the health of their infants .

Past controversy about HIV screening of pregnant women has been less related to its scientific aspects than to the social, ethical, and political implications of testing and occurred at the time when no effective preventives were known. In other words, the case of prenatal HIV testing provides a clear example of how nonscientific concerns can trump (whether rightly or wrongly) an otherwise widely accepted, evidence-based strategy. Individuals infected with HIV have often been subjected to prejudice and discrimination, especially early in the epidemic. The high potential for such discriminatory effects was enough to separate HIV screening from other kinds of screening for maternal conditions, such as tests for Rh factor, blood count, glucose levels, rubella immunity, hepatitis B, syphilis, chlamydia, and gonorrhea. Rigid legal requirements for informed consent specific to prenatal HIV testing exist in some states, may require patient notification of the right to refuse testing, and hinder the implementation of universal testing as a routine component of prenatal care.2 Nonetheless, it has been suggested that mandatory testing for HIV in pregnant women is rational, just as is screening for syphilis. This is in part because the potential harm to the infant is so great (essentially life-or-death),6 particularly when compared to the relative ease with which treatment of the mother can prevent perinatal HIV transmission.

Mandatory prenatal HIV testing, however, may have negative consequences of its own. First, under mandatory testing, some pregnant women may not seek prenatal care due to a variety of concerns related to testing HIV-positive. Such concerns include the fear of personal illness or death; the fear of losing relationships, jobs, or both; fear of domestic violence;7 and the fear of financial hardships and stigma that some HIV-positive persons face.8 Therefore, mandatory testing may reduce the number of pregnant women who seek prenatal care, especially those in high-risk populations.9 Second, mandatory testing violates patient autonomy, the right to bodily integrity, and the right to make medical decisions about one's care and treatment. It may place individual rights of adults at odds with the state's duty to protect the health and safety of children. Finally, studies have also shown that, given the high levels of acceptance of voluntary HIV testing in the United States, the benefits of mandatory testing are minimal.10 Therefore, with good reason, a strategy of routine counseling and voluntary testing with the right of refusal has been widely recommended over mandatory testing programs.

Under the "routine counseling and voluntary testing with the right of refusal" strategy, providers of prenatal services can offer HIV testing to all pregnant women under their care. Women have the option to refuse the test if they wish. This strategy can be accomplished in at least 3 ways.

  • The first and most widely accepted method is to provide HIV testing only after the woman has been consulted and her informed consent obtained.
  • The second method recommends that patients be informed about the provider's intent to perform an HIV test, and only if the woman signs a form refusing the test ("the right of refusal") is the test withheld.
  • Lastly, consent of HIV testing may be considered implied by a woman's general consent to supply a blood sample for prenatal testing. This method of presumed consent is used in testing for hepatitis B, syphilis, chlamydia, and gonorrhea. Women who seek prenatal care are assumed to consent to routine testing and are not asked for specific verbal or written consent to testing for these diseases.

Studies indicate that all methods of this strategy are cost-effective,11 acceptable to pregnant women,12 and can achieve the benefits of prenatal HIV screening without violating women's civil liberties.13

Yet, up to 10 percent of pregnant women may not consent to prenatal HIV-testing.14,15 If true, this finding limits the utility of the first 2 methods. Some of the reasons why pregnant women refuse testing include:

  • the fear of being stigmatized as sexually promiscuous or as an injection drug user;
  • denial about the possibility of being infected;
  • fatalism about life;
  • fear of rejection leading to loss of emotional and financial support;
  • lack of self-perceived risk for HIV infection;
  • prior negative HIV test results;
  • and lack of spouse approval.14,15,16,17,18,19

In our experience in Los Angeles County , 8 percent of pregnant women interviewed refused HIV-testing. Of these, 74 percent were foreign-born, and the most common reasons for refusal were that they had been tested previously (44.6 percent) or were in a monogamous relationship (35.4 percent). Therefore, under the first 2 methods of implementing voluntary testing, some HIV positive women may choose not to be tested. As a result, these women would not receive the treatment and service they need to combat the disease and protect their babies and others against HIV infection. The opportunity to treat the mother early and prevent mother-to-infant transmission will be missed.

The third method—implied consent—has some notable advantages over the previous 2. If consent for HIV testing can be considered implied by a woman's general consent to supply a blood sample for prenatal testing and HIV testing is incorporated into the standard battery of prenatal tests, more pregnant women will be tested for HIV. Importantly, at the same time that testing becomes more widespread, the stigma of HIV testing may diminish by elimination of any targeted testing based on appearance, socioeconomic status, and race or ethnicity. For a pregnant woman who was not screened for HIV due to lack of prenatal care, rapid tests during labor and delivery or postpartum should be considered as part of standard obstetrics care to further reduce perinatal HIV transmission.

So, to minimize mother-to-infant HIV transmission and address the social, ethical, and political implications of HIV testing during pregnancy, has the time arrived for health care providers, policy makers, and civil rights advocates to revisit the notion that consent for HIV testing may be considered implied by a woman's general consent to supply a blood sample for prenatal testing? Incorporating HIV testing into the standard battery of prenatal tests provides a rational way to implement a sound, evidence-based strategy while addressing some of the critical social and ethical issues surrounding HIV testing.

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  • Evidence-based practice/Effectiveness,
  • Chronic disease/HIV, AIDS,
  • Infectious diseases/HIV, AIDS

References

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Citation

Virtual Mentor. 2004;6(12):566-569.

DOI

10.1001/virtualmentor.2004.6.12.msoc1-0412.

The viewpoints expressed in this article are those of the author(s) and do not necessarily reflect the views and policies of the AMA.

Author Information

  • Getahun Aynalem, MD, MPH is a medical epidemiologist in the Sexually Transmitted Diseases Program, Department of Public Health, Los Angeles County Health Care Services. Correspond with Dr. Aynalem at [email protected]

  • Peter Kerndt, MD, MPH is director of the Sexually Transmitted Diseases Program, Department of Public Health; Los Angeles County Health Care Services.

  • Kellie Hawkins, MPH is an epidemiology analyst in the Sexually Transmitted Diseases Program, Department of Public Health, Los Angeles County Health Care Services.

    When should a pregnant woman be tested for HIV?

    Approximately 80% of perinatal HIV transmissions occur after week 36 [Kourtis, et al. 2001]; therefore, this committee recommends HIV testing be performed between weeks 28 and 32 so that HIV testing can be performed concurrently with syphilis testing.

    Why HIV Screening in pregnancy?

    Since 1995, CDC has recommended all pregnant women be tested for HIV and, if found to be infected, offered treatment for themselves to improve their health and to prevent passing the virus to their infant.
    All pregnant women with HIV should take HIV medicines throughout pregnancy for their own health and to prevent perinatal transmission of HIV. (HIV medicines are called antiretrovirals). Perinatal transmission of HIV is also called mother-to-child transmission of HIV. Most HIV medicines are safe to use during pregnancy.
    Nucleic Acid Test (NAT) With a NAT, the health care provider will draw blood from your vein and send the sample to a lab for testing. This test can tell if a person has HIV or how much virus is present in the blood (HIV viral load test). A NAT can detect HIV sooner than other types of tests.