Predictive Value of the Uric Acid/Albumin Ratio and Lactate in Sepsis Patients

January 12, 2026 updated by: İlke Dolgun, Istinye University

Predictive Value of the Combination of Uric Acid/Albumin Ratio and Lactate for Acute Kidney Injury, Hemodynamic Support Requirement, and Mortality in Patients With Sepsis

Sepsis is a life-threatening condition characterized by organ dysfunction resulting from a dysregulated host response to infection and remains a leading cause of morbidity and mortality in intensive care units. Early identification of patients at high risk for adverse outcomes is essential for timely intervention and improved prognosis.

This prospective, single-center, non-interventional study aims to evaluate the predictive value of the combined use of the blood uric acid/albumin ratio (UAR) and serum lactate levels in patients aged 65 years and older who are admitted to the intensive care unit with a diagnosis of sepsis according to SEPSIS-3 criteria. Patients without acute kidney injury at admission and with at least 24 hours of intensive care follow-up will be included.

The primary outcome is the development of acute kidney injury within the first 7 days of ICU admission according to KDIGO criteria. Secondary outcomes include vasopressor requirement during ICU stay, changes in serum lactate levels over the first 24 hours, and 28-day mortality. The study seeks to determine whether the combination of UAR and lactate levels can serve as an easily accessible and clinically applicable biomarker to predict adverse outcomes and support prognostic assessment and treatment strategies in sepsis patients.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Other: Non-interventional / Observational Study

Study Type

Observational

Enrollment (Estimated)

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Name: ilke dolgun
Phone Number: +905555485632
Email: ilkeser2004@gmail.com

Study Locations

Turkey (Türkiye)
- Merkez Mahallesi
  - Istanbul, Merkez Mahallesi, Turkey (Türkiye), 34250
    - Istinye University

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

Older Adult

Accepts Healthy Volunteers

Sampling Method

Non-Probability Sample

Study Population

The study population consists of critically ill adult patients aged 65 years and older who are admitted to a tertiary-level intensive care unit with a diagnosis of sepsis based on SEPSIS-3 criteria. All participants are required to have baseline measurements of serum uric acid, albumin, and lactate levels at the time of ICU admission and no evidence of acute kidney injury at presentation. The study focuses on evaluating the prognostic value of routinely available biochemical markers in predicting adverse clinical outcomes, including acute kidney injury, vasopressor requirement, and short-term mortality during intensive care follow-up.

Description

Inclusion Criteria:

Patients aged 65 years and older
Diagnosis of sepsis according to SEPSIS-3 criteria
Admission to the intensive care unit
No acute kidney injury at admission according to KDIGO classification
Measurement of serum uric acid, albumin, and lactate levels at ICU admission
SOFA score calculated at ICU admission
ICU follow-up of at least 24 hours

Exclusion Criteria:

Age under 65 years
Uncompensated or decompensated chronic liver disease (e.g., Child-Pugh class C)
Chronic kidney disease stage 4 or 5 (eGFR <30 mL/min/1.73 m²)
Presence of acute kidney injury at admission according to KDIGO criteria
Active malignancy or receipt of active cancer treatment within the last 6 months
Missing or incomplete clinical/laboratory data
ICU follow-up less than 24 hours

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Development of Acute Kidney Injury (AKI) Time Frame: Within the first 7 days following intensive care unit admission	Occurrence of acute kidney injury defined according to the Kidney Disease: Improving Global Outcomes (KDIGO) criteria in patients with sepsis admitted to the intensive care unit.	Within the first 7 days following intensive care unit admission

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Istinye University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

January 15, 2026

Primary Completion (Estimated)

May 15, 2026

Study Completion (Estimated)

May 31, 2026

Study Registration Dates

First Submitted

December 31, 2025

First Submitted That Met QC Criteria