Databases, FactualHydrogen-Ion ConcentrationIndiaImage Processing, Computer-AssistedChromatography, High Pressure LiquidActivities of Daily LivingAnti-Infective Agents, LocalInfant FormulaCalibrationVideo RecordingCeriumLaboratoriesIndicators and ReagentsFood, FormulatedVitamin B 12
Practice Location
UPMC HEART AND VASCULAR INSTITUTE PITTSBURGH, PA 15232
Rabindra Girdhar studies nutrition, health conditions, and the careful measurement of essential nutrients to ensure safety and quality in food products, particularly in India. He has validated testing methods for key vitamins and nutrients, which help ensure that food products are safe and effective for infants and adults alike. Additionally, he has researched severe health issues linked to HIV, emphasizing the importance of monitoring calcium levels in patients with this condition. Girdhar is also involved in creating and analyzing a vast library of videos that document daily activities from a personal perspective, which can enhance technology aimed at understanding human interactions better.
Key findings
In validating a nutritional testing method, Girdhar achieved an accuracy range of 90-110%, with less than 5% variation, ensuring safety in Indian food formulations.
He confirmed the AOAC Official Method 2011.10 for measuring vitamin B12 with a relative standard deviation of less than 20% and average recoveries between 91.75% and 101.14%.
Girdhar observed dangerously low calcium levels (5.7 mg/dL) in an HIV patient, which improved to 9.18 mg/dL after supplement adjustments, showcasing the need for monitoring calcium in HIV patients.
The Ego4D project compiled 3,670 hours of video footage from 931 people, enhancing understanding of human activities and interactions.
His method for measuring sulphacetamide effectively detects concentrations from 0.07 to 1.1 mg, crucial for accurate medication dosing.
Frequently asked questions
Does Dr. Girdhar study nutritional products?
Yes, he focuses on ensuring the safety and nutritional quality of infant and adult nutritional products, particularly in India.
What health conditions has Dr. Girdhar researched?
He has studied severe symptoms linked to HIV, particularly focusing on calcium levels and their regulation.
Is Dr. Girdhar's work relevant to patients with vitamin deficiencies?
Absolutely, his research on vitamin B12 measurement ensures that nutritional formulas meet necessary health standards.
How does Dr. Girdhar's work impact technology?
His Ego4D project provides valuable data that can improve technologies like virtual assistants and robotics by enhancing their understanding of human behavior.
What implications does Girdhar's research have for cancer treatment?
His study on malignant nonfunctioning pheochromocytoma helps doctors better diagnose and understand cancer risks in patients with multiple endocrine neoplasia.
Publications in plain English
Ego4D: Around the World in 3,600 Hours of Egocentric Video.
2025
IEEE transactions on pattern analysis and machine intelligence
Grauman K, Westbury A, Byrne E, Cartillier V, Chavis Z +81 more
Plain English This research created a large collection of videos called Ego4D, which includes 3,670 hours of footage showing everyday activities from the perspective of 931 different people in various locations around the world. The study emphasizes privacy by ensuring all participants consented to be filmed and followed strict ethical guidelines. This resource allows researchers to better understand how people perceive activities and interactions in real life, which may improve technology that relies on visual data, like virtual assistants or robotics.
Who this helps: This helps researchers, developers, and companies working on artificial intelligence and human-computer interaction.
Single-Laboratory Validation to Extend the Scope of AOAC Official MethodSM 2015.06 to Indian Infant, Child, and Adult Nutritional Matrixes.
2021
Journal of AOAC International
Girdhar R, Thompson JJ, Yadlapalli S, Srivastava V, Mittal AK +1 more
Plain English This study looked at a testing method used to measure essential nutrients in infant and adult nutritional products, specifically focusing on how well it works with popular Indian food formulations. Researchers found that the method was highly accurate, with an accuracy range of 90-110%, and reliable results were achieved with less than 5% variation in most tests. This matters because it means the established testing method can be more broadly applied to Indian nutritional products, ensuring better quality control and safety for consumers.
Who this helps: This helps patients and parents by ensuring the nutritional products they use are safe and accurately meet their dietary needs.
Single-Laboratory Validation of AOAC Official Method 2011.10 for Vitamin B12 in 'Indian' Infant and Pediatric Formulas and Adult Nutritionals.
2020
Journal of AOAC International
Amritkar PN, Gujar L, Mittal AK, Sheshadri A, Girdhar R +1 more
Plain English This study looked at a specific method for measuring vitamin B12 in infant and adult nutritional products in India. Researchers validated the AOAC Official Method 2011.10 and found it to be precise and accurate for determining vitamin B12 levels, with a relative standard deviation of less than 20% in tested samples and average recoveries between 91.75% and 101.14%. This is important because accurate vitamin B12 measurement ensures that these products meet health standards, which is crucial for the growing population that relies on them.
Who this helps: Patients and their families who rely on nutritional formulas for their health.
Severe Symptomatic Hypocalcemia from HIV Related Hypoparathyroidism.
2018
Case reports in endocrinology
Sandhu S, Desai A, Batra M, Girdhar R, Chatterjee K +3 more
Plain English This study looked at a 54-year-old woman with HIV who experienced severe low calcium levels for two years, leading to multiple hospital stays. Her calcium levels were dangerously low at 5.7 mg/dL, compared to the normal range of 8.4-10.2 mg/dL, and she was diagnosed with primary hypoparathyroidism, a condition affecting calcium regulation. After adjusting her supplements, her calcium levels improved to 9.18 mg/dL, showing that monitoring calcium levels in HIV patients is important for preventing serious symptoms.
Who this helps: This helps patients with HIV and their doctors by emphasizing the need for regular calcium level checks.
Spectrophotometric determination of sulphacetamide.
2002
Bollettino chimico farmaceutico
Girdhar R, Jain VK, Menon SK, Agrawal YK
Plain English This study focuses on a new fast method to measure a drug called sulphacetamide. Researchers found that the drug creates a bright orange-yellow compound when mixed with Cerium(IV) in a specific solution, which can be measured easily. The method is precise enough to detect sulphacetamide concentrations between 0.07 and 1.1 mg.
Who this helps: This helps doctors and pharmacists ensure accurate dosage of sulphacetamide in medications.
Malignant nonfunctioning pheochromocytoma occurring in a mixed multiple endocrine neoplasia syndrome.
1997
Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
Mozersky RP, Girdhar R, Palushock S, Patel N, Nolan S +1 more
Plain English This study presents the case of a 34-year-old man with a rare type of cancer called malignant nonfunctioning pheochromocytoma, which occurred in the context of a genetic disorder known as multiple endocrine neoplasia type I (MEN type I). After experiencing severe headaches and other symptoms, he underwent several treatments, including surgery, but ultimately developed widespread cancer that led to his death despite chemotherapy. This case is significant because it highlights how malignant pheochromocytoma can arise in MEN type I, even when patients do not show typical symptoms, which may change how doctors diagnose and treat similar cases.
Who this helps: This helps doctors and patients with MEN type I by improving understanding of cancer risks associated with this condition.