Using smaller blood collection tubes to reduce transfusions in ICU patients with anemia

Effectiveness of Small Phlebotomy Tubes in Reducing Blood Transfusions in Adult Medical Intensive Care Unit and Intermediate Care Unit Patients With Anemia: A Randomized Controlled Trial

Not applicable Interventional The University of Texas Health Science Center, Houston · NCT05750654

This study tests if using smaller blood collection tubes can help reduce the need for blood transfusions in adults with anemia who are in the ICU.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment688 (estimated)
Ages18 Years and up
SexAll
SponsorThe University of Texas Health Science Center, Houston Academic / other
Drugs / interventionschemotherapy
Locations1 site (Houston, Texas)
Trial IDNCT05750654 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of small phlebotomy tubes in reducing the need for red blood cell transfusions in adult patients with anemia admitted to medical intensive care units (ICU) and intermediate care units (IMU). It compares outcomes such as ICU length of stay, mortality rates, and the overall acceptability of using smaller tubes versus standard-sized tubes. The goal is to determine if smaller tubes can help manage anemia more effectively while minimizing transfusion requirements.

Who should consider this trial

Good fit: Ideal candidates are adults admitted to the medical ICU or IMU with a hemoglobin level below 10 g/dL.

Not a fit: Patients with active clinical bleeding, hemolytic disorders, or those receiving comfort care measures will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to fewer blood transfusions for ICU patients, improving patient safety and outcomes.

How similar studies have performed: While the specific use of small phlebotomy tubes is novel, similar studies have shown that minimizing blood draws can reduce transfusion needs in critically ill patients.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Admission to the medical ICU or IMU.
* Hemoglobin less than 10 g/dL.

Exclusion Criteria:

* Clinical bleeding. Defined as any bleeding needing an intervention. An intervention could be an increase in the frequency of hemoglobin monitoring, a transfusion, a procedure, or a consultation intended to prevent or treat bleeding.
* Hemolytic disorder (e.g. sickle cell disease, hereditary spherocytosis, autoimmune hemolytic anemia).
* Bone marrow disorder (e.g. aplastic anemia, leukemia, marrow infiltration disorder, chemotherapy within the last 8 weeks).
* Jehovah's Witnesses.
* Patient is comfort care measures only.
* Refractory shock: Mean arterial blood pressure below 65 mmHg despite maximal doses of 3 vasopressors. Maximal dose of vasopressors are as follows: Norepinephrine 70 mcg/min; vasopressin 0.03 units/min; epinephrine 35 mcg/min; dopamine 20 mcg/kg/min; phenylephrine 350 mcg/min.
* Severe acidosis: pH below 7 in more than one arterial blood gas in the past 24 hours, in the absence of diabetic ketoacidosis.
* Surgical admission diagnosis.
* Pregnancy.
* Current prisoner

Where this trial is running

Houston, Texas

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions AnemiaBlood transfusion
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.