Treatment of Non-Anemic Iron Deficiency in Pregnancy: a Double-Blind Randomized Control Trial

  • End date
    Jan 15, 2024
  • participants needed
  • sponsor
    Stony Brook University
Updated on 29 October 2022
Accepts healthy volunteers


The objective is to investigate the treatment of non-anemic iron deficiency (NAID) and the impact on development of anemia later in pregnancy. Anemia in the third trimester has been identified as a risk factor for maternal and fetal morbidity that might lead to mortality. Due to the high incidence of NAID in pregnancy, there is an opportunity for early screening and treatment to decrease progression to anemia. The primary aim of this study is to establish if treatment of NAID will result in higher third trimester hemoglobin values and decrease incidence of anemia at term.


All women who fit the inclusion criteria will be approached to be recruited for participation at Stony Brook University Hospital outpatient clinic at less than 20 weeks gestational age. Women who agree to participate in the study will be consented. The study team member will obtain consent from participants and randomize the patient into either the treatment or placebo group based on a 1:1 randomization scheme generated by The study team member will remain blinded, as randomization of subjects will be coordinated by departmental research coordinator, who will not have any interaction with subjects. The treatment group will receive oral ferrous sulfate 325mg (containing 65 mg of elemental iron) daily and a prenatal vitamin, and the placebo group will receive prenatal vitamin and a placebo pill. The prenatal vitamin, which contains iron, will be the same exact formula and will be given to all participants in both control and treatment groups. Only the treatment group will receive the extra iron supplement. The treatment group will also receive vitamin C 500mg daily to assist with iron absorption. Both groups will receive oral docusate sodium (Colace) 100mg twice daily as needed to decrease the risk of constipation.

The randomization will be blinded to the participant, along with the medical provider and study team. Since the Research Pharmacy is able to combine the iron and Vitamin C into one pill, and both groups will receive Colace and prenatal vitamin, the total pill count will not differ from the treatment group and placebo group.

Patients who agree to participate in the study will continue with routine prenatal care and testing, which includes a repeat complete blood count (CBC) in both the second and third trimester, at approximately 24-28 weeks and 34-36 weeks, as is standard of care. In the second and third trimester, a questionnaire will be given to the subject to assess fatigue scores, experience of side effects and severity of side effects. At that time, a study team member will also perform a pill count to assess for compliance.

At time of admission to the hospital for delivery, a repeat ferritin level will be drawn with routine lab work, including a CBC, with no additional risk of blood draw to the patient as this is part of standard of care. The ferritin test will be for research purposes for the study, but will not require an additional blood draw. Clinical anemia will be defined as a hemoglobin level less than or equal to 11 g/dL. While there is no normative data in the literature on ferritin levels in pregnancy, we will define a low ferritin level as <30 mcg/L based on both retrospective pregnancy data and standardized ferritin levels in the non pregnant patient population.

Condition Non-anemic Iron Deficiency
Treatment Placebo, Ferrous sulfate, Docusate Sodium, Prenatal, Ascorbic Acid 500Mg Tab
Clinical Study IdentifierNCT05423249
SponsorStony Brook University
Last Modified on29 October 2022


Yes No Not Sure

Inclusion Criteria

English speaking
age 18-55
less than 20 weeks gestational age
low ferritin level (<30mcg/L) in the first trimester
normal hemoglobin level (>11g/dL) in the first trimester

Exclusion Criteria

Women with anemia diagnosed in the first trimester (HgB ≤11 g/dL)
Women with antepartum iron supplementation, except prenatal vitamin, within 3 months
Women with iron overload or hypersensitivity
Women with significant vaginal bleeding prior to enrollment
Women with chronic illness: SLE, hemoglobinopathies, HIV, inflammatory bowel disease, active cancer, prior bariatric surgery
Clear my responses

How to participate?

Step 1 Connect with a study center
What happens next?
  • You can expect the study team to contact you via email or phone in the next few days.
  • Sign up as volunteer  to help accelerate the development of new treatments and to get notified about similar trials.

You are contacting

Investigator Avatar

Primary Contact


Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

Learn more

If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

Learn more

Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

Learn more

Similar trials to consider


Browse trials for

Not finding what you're looking for?

Every year hundreds of thousands of volunteers step forward to participate in research. Sign up as a volunteer and receive email notifications when clinical trials are posted in the medical category of interest to you.

Sign up as volunteer

user name

Added by • 



Reply by • Private

Lorem ipsum dolor sit amet consectetur, adipisicing elit. Ipsa vel nobis alias. Quae eveniet velit voluptate quo doloribus maxime et dicta in sequi, corporis quod. Ea, dolor eius? Dolore, vel!

  The passcode will expire in None.

No annotations made yet

Add a private note
  • abc Select a piece of text from the left.
  • Add notes visible only to you.
  • Send it to people through a passcode protected link.
Add a private note