A Coefficient in the Lab Report: A Nurse Practitioner Advocates for Race-Free Kidney Function Estimates Across a Health System
[Student Name]
University of Phoenix
NSG/507: Social Justice and Information Systems for Population Health
Week 1 Assignment
[Instructor Name]
[Date]
The health system, patients and figures are a composite written for a model paper.
In most clinical encounters, an estimated glomerular filtration rate (eGFR) arrives as a single number on a laboratory report, and few clinicians ask how it was calculated. A composite family nurse practitioner in a large urban primary care network asked after she noticed something she could not explain: two of her patients, a Black man and a white man of the same age with nearly identical serum creatinine levels, had eGFR values that differed by about 16%, placing the white patient in a stage of chronic kidney disease that called for referral and the Black patient just outside it. The difference came not from their kidneys but from a single multiplier applied to one patient because of the race recorded in his chart. This paper describes how she advocated for removing that multiplier across her health system and what the effort teaches about the advanced practice nurse's role in social justice.
Social Justice in Health Care
Social justice in health care concerns the fair distribution of health resources, opportunities and burdens and the removal of structures that systematically disadvantage some groups. The Code of Ethics for Nurses charges nurses with advancing health and human rights and reducing health disparities, and it extends that obligation beyond individual patients to the policies and systems that shape care (American Nurses Association, 2015). For advanced practice nurses, who order and interpret the tests that drive clinical decisions, the obligation includes examining the tools themselves.
Vyas et al. (2020) reviewed clinical algorithms across specialties that adjusted their outputs according to a patient's race and argued that many of these adjustments were based on weak evidence, treated race as a biological category rather than a social one and could direct resources away from patients of color. The kidney function equation was among their most prominent examples.
How the Coefficient Worked
The widely used 2009 CKD-EPI creatinine equation multiplied the eGFR by about 1.16 for patients identified as Black, based on observations that Black participants in the development studies had higher average serum creatinine at a given measured kidney function. The adjustment assumed that race could stand in for differences in muscle mass or creatinine production, and it was applied based on self-reported or recorded race, a social category that does not map neatly onto biology.
The consequences were concrete. A higher eGFR could delay a Black patient's diagnosis of chronic kidney disease, delay referral to a nephrologist, delay eligibility for placement on a kidney transplant waiting list, which depends on eGFR thresholds, and change medication dosing decisions. Because Black Americans already face a higher burden of kidney failure, a tool that systematically made their kidney function look better compounded an existing inequity.
The Evidence That Made Change Possible
Advocacy needs a workable alternative, not only an argument. In 2021 a joint task force of the National Kidney Foundation and the American Society of Nephrology recommended that laboratories immediately adopt a refitted CKD-EPI creatinine equation without a race variable and increase the use of cystatin C to confirm kidney function when needed (Delgado et al., 2022). The recommendation drew on work by Inker et al. (2021), who developed and validated new creatinine and cystatin C equations without race and found that the equation combining both markers was the most accurate across racial groups, while the creatinine-only equation without race performed acceptably, with smaller and more balanced differences between groups than the earlier approaches.
The Advocacy Plan
The nurse practitioner's plan moved from evidence to people with the authority to act.
First, she documented the local problem. With help from the network's data analyst, she estimated how many Black patients in the network had eGFR values between 60 and 70 under the old equation that would fall below 60 under the new one, crossing into stage 3 chronic kidney disease. The estimate was about 1,900 patients.
Second, she built a coalition. She brought the data to the network's health equity committee, a nephrologist at the affiliated hospital, the laboratory director and a patient advisory council member who had waited years for a transplant evaluation.
Third, she prepared a brief for the laboratory and pathology committee that summarized the task force recommendation, the validation evidence, the local numbers and an implementation plan, including a date to switch the equation, a note on laboratory reports explaining the change and the addition of cystatin C testing to the laboratory menu.
Fourth, she anticipated objections. The laboratory director worried about confusion when patients' eGFR values changed overnight. The brief proposed a standard explanatory comment on reports for six months and a short education session for clinicians.
The committee approved the change, and the laboratory adopted the race-free equation four months later.
Advocacy Does Not End With the Vote
A new equation changes numbers on reports; it does not by itself change care for the patients who had been missed. The nurse practitioner therefore proposed a second phase. The analyst generated a list of patients whose eGFR moved below 60 after the change and who had no chronic kidney disease diagnosis, no albuminuria test in the past year or no nephrology referral where indicated. Primary care teams received their patients' names with a checklist for the next visit: confirm the diagnosis, order a urine albumin-to-creatinine ratio, review medication dosing, discuss blood pressure and diabetes control and, for patients with more advanced disease, discuss referral. For patients already on dialysis or with low eGFR, the nephrology group reviewed whether earlier transplant waitlist credit should be requested under national transplant policy changes that allowed waiting time to be adjusted for patients affected by the race-based calculation.
Measuring Whether Justice Reached Patients
The equity committee agreed on measures before the switch so that success would be judged by care, not by the policy itself. For the roughly 1,900 reclassified patients, the network tracked the percentage with a documented chronic kidney disease diagnosis within six months, the percentage with a urine albumin test within a year and, for patients meeting referral criteria, the percentage seen by nephrology. It also compared these rates between Black and white patients with similar kidney function, since the purpose of the change was to close a gap, and a gap that persisted after the equation changed would point to other barriers, such as access to specialists or trust. At the six-month review, diagnosis documentation had risen sharply, but nephrology visits lagged because of long wait times, which led the nurse practitioner to her next advocacy target: an electronic consultation pathway that lets primary care clinicians get nephrology advice without a months-long wait.
Reflection on the Advanced Practice Role
Three lessons emerged. First, injustice can hide in routine tools, and advanced practice nurses are positioned to notice it because they interpret results for individual patients every day. Second, advocacy inside a health system depends as much on data and coalitions as on moral argument. Third, social justice work must be measured by what happens to patients, not only by what changes on paper.
Conclusion
A single multiplier in a kidney function equation made Black patients' kidneys appear healthier than they were, delaying diagnosis, referral and transplant evaluation. A nurse practitioner who noticed the discrepancy used national evidence, local data, a coalition and a well-prepared brief to persuade her health system to adopt a race-free equation, then pressed for follow-up care for the patients the old equation had missed. Her work shows the advanced practice nurse's role in social justice: examining the structures behind clinical decisions and following changes through to the people they are meant to serve.
References
American Nurses Association. (2015). Code of ethics for nurses with interpretive statements. American Nurses Publishing.
Delgado, C., Baweja, M., Crews, D. C., Eneanya, N. D., Gadegbeku, C. A., Inker, L. A., Mendu, M. L., Miller, W. G., Moxey-Mims, M. M., Roberts, G. V., St. Peter, W. L., Warfield, C., & Powe, N. R. (2022). A unifying approach for GFR estimation: Recommendations of the NKF-ASN task force on reassessing the inclusion of race in diagnosing kidney disease. American Journal of Kidney Diseases, 79(2), 268-288. https://doi.org/10.1053/j.ajkd.2021.08.003
Inker, L. A., Eneanya, N. D., Coresh, J., Tighiouart, H., Wang, D., Sang, Y., Crews, D. C., Doria, A., Estrella, M. M., Froissart, M., Grams, M. E., Greene, T., Grubb, A., Gudnason, V., Gutierrez, O. M., Kalil, R., Karger, A. B., Mauer, M., Navis, G., ... Levey, A. S. (2021). New creatinine- and cystatin C-based equations to estimate GFR without race. New England Journal of Medicine, 385(19), 1737-1749. https://doi.org/10.1056/NEJMoa2102953
Vyas, D. A., Eisenstein, L. G., & Jones, D. S. (2020). Hidden in plain sight: Reconsidering the use of race correction in clinical algorithms. New England Journal of Medicine, 383(9), 874-882. https://doi.org/10.1056/NEJMms2004740
How this NSG 507 Week 1 example is structured
The University of Phoenix library guide for NSG/507 lists Week 1 as Advocate for Social Justice. The paper defines social justice in health care before telling the story, so the case is read through a concept rather than as an anecdote. It explains how the race coefficient worked and why it was unjust, sets out the evidence that allowed it to be removed, describes the advocacy steps and ends with what happened to patients after the change, because advocacy that stops at a policy vote has not yet reached anyone. Students search this week as NSG 507 Week 1, NSG507 Wk 1 or NSG/507 Wk 1; all three are the same assignment.
NSG/507 Week 1 questions, answered
What does NSG/507 Week 1 usually ask for?
The University of Phoenix library guide for NSG/507 lists Week 1 as advocate for social justice. Many sections ask for a paper on the advanced practice nurse's role in advocating for social justice and health equity, often applied to an injustice the writer has seen in practice. Check your instructions for the required elements.
Is the eGFR race coefficient still used?
National kidney organizations recommended in 2021 that laboratories adopt an equation without a race term, and many U.S. laboratories have since changed. Some systems adopted it later than others, which is why the composite health system in the sample still needed advocacy.
How is social justice different from equality?
Equality gives everyone the same thing; social justice asks whether systems distribute benefits and burdens fairly and works to remove structures that disadvantage some groups. In health care, that includes clinical tools that build unfair assumptions into routine decisions.
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