Nephropathology Associates, PLC

Nephropathology Associates, PLC, doing business as Arkana Laboratories, is a for-profit limited liability company headquartered in Little Rock, Arkansas, that specializes in esoteric pathology and nephrology laboratory services. The firm operates as the largest nephropathology practice in the United States, maintaining a team of over 25 world-class board-certified renal pathologists. Arkana Laboratories provides advanced renal biopsy testing, STAT (immediate) diagnostic services, and comprehensive kidney tissue analysis to support clinical decision-making for patients with complex kidney diseases. The company has established itself as a critical provider of specialized diagnostic services to the federal healthcare system, particularly the Department of Veterans Affairs, and maintains significant research partnerships focused on precision medicine and innovative diagnostic technologies in kidney disease management.

Through federal contract awards, Arkana Laboratories has demonstrated extensive expertise in delivering specialized nephropathology services to multiple Department of Veterans Affairs Veterans Integrated Service Networks. The company's primary contract focus involves renal biopsy STAT testing, anatomic pathology referral laboratory testing, nephrology laboratory testing, and kidney biopsy analysis for transplant patients. Services include advanced diagnostic analysis utilizing special stains, immunofluorescence, electron microscopy, and comprehensive analysis and diagnosis performed by board-certified renal pathologists, with critical turnaround times often requiring 24-48 hour completion. Contract awards have been issued by VISN 2, VISN 5, VISN 9, VISN 16, and VISN 17, with contract values ranging from approximately $23,440 to $1.13 million. Notable definitive contracts include a $268,733.16 award from VISN 2 for renal transplant services and routine renal tissue biopsy processing at James J. Peters VA Medical Center in Bronx, New York through September 2030, and a $1.13 million purchase order from VISN 17 for anatomic pathology referral laboratory testing services at Michael E. DeBakey Veterans Affairs Medical Center in Houston, Texas through May 2027. Arkana Laboratories has also received multiple blanket purchase agreement calls designated as total small business set-asides from VISN 9 for nephrology testing services. The company has secured delivery orders and BPA calls across multiple contract types without set-aside designations, reflecting both competitive and sole-source procurements where the VA determined Arkana to be the only responsible source capable of meeting specialized requirements.

Through federal grant awards, Arkana Laboratories has secured multiple research grants from the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) totaling significant investment in precision medicine and diagnostic innovation. The company received a Phase II direct-to-phase award for developing a proprietary digital platform for precision patient identification and enrollment of clinical trials for rare kidney diseases, leveraging Arkana's unique position as the largest nephropathology practice and its existing ARKANA CONNECT mobile application used by over 1,300 clinicians. Additional NIDDK grants support development of smartphone image analysis tools for real-time adequacy assessment during kidney biopsy procedures, addressing the critical challenge of inadequate biopsies that has risen to 15% over the past 15 years. The company also received a grant from the National Institute of Arthritis and Musculoskeletal and Skin Diseases for development of specific peptide reagents for serologic monitoring of exostosin autoantibodies in membranous lupus nephritis. Other NIDDK grants have funded the development of rapid genotyping tools for APOL1 risk alleles using CRISPR-Cas12a technology and commercialization of mass spectrometry-based workflows for diagnosis and classification of membranous nephropathy, reflecting Arkana's role in advancing precision medicine approaches to kidney disease diagnosis. These grants demonstrate the company's technical expertise and capability in combining histopathological analysis with molecular and proteomic technologies. The company also serves as a sub-awardee on a research grant from Tufts College, further expanding its role in federally-funded kidney disease research initiatives.

Nephropathology Associates, PLC holds four active indefinite delivery contracts with the Department of Veterans Affairs across multiple Veterans Integrated Service Networks. A single-award indefinite delivery contract with VISN 2, awarded April 1, 2025, provides renal biopsy send-out testing services for Buffalo VA Medical Center and Stratton VA facility with a ceiling value of $360,000 through March 31, 2026, and was awarded on a sole-source basis under FAR 6.302-1. A substantial single-award indefinite delivery contract with VISN 17, awarded January 1, 2025, has a ceiling value of $779,186.96 with an ultimate completion date of December 31, 2029, and covers renal biopsy stat testing, nephrology laboratory testing, and anatomic pathology referral laboratory testing across multiple VA networks with a guaranteed minimum of $10,000 and maximum of $1,000,000 over the 5-year period. A single-award indefinite delivery contract with VISN 16, awarded October 2, 2023, provides STAT renal biopsy lab services with a ceiling value of $211,320.44 through September 30, 2027, and has supported two firm fixed-price delivery orders to date. Additionally, a blanket purchase agreement with VISN 9, awarded October 1, 2022, established a single-award vehicle with a potential value of $450,000 over five years through September 30, 2027, for nephrology pathology and laboratory medicine services, under which the VA has issued multiple calls designated as total small business set-asides. These IDVs collectively position Arkana Laboratories as a preferred provider of specialized renal pathology services across the VA healthcare system, with multiple ongoing delivery orders and calls supporting veterans' diagnostic and treatment needs.

Nephropathology Associates (dba Arkana Laboratories) is a leader in providing pathology services in renal, nerve, muscle and transplantation pathology as well as in specialized diagnostic testing involving electron microscopy, immunofluorescence, immunohistochemistry, biomarker testing, histology and whole-slide imaging, serologic testing, laser capture microdissection, mass spectrometry, in situ hybridization and molecular diagnostics. Our zebrafish laboratory constructs custom genetically modified lines, drug testing and toxicity screening. Our biorepository collects tissue, blood and urine samples for a range of renal diseases. Our laboratory is certified by CLIA (Clinical Laboratory Improvement Amendments of 1988) and accredited by the College of American Pathologists (CAP).