Evidence-Based Supplement & Herb Guides

Tubular Proteinuria Test: Low-Molecular-Weight Proteins and Kidney Tubule Damage

Learn how tubular proteinuria tests detect low-molecular-weight proteins, what high RBP or microglobulins mean, causes of proximal tubule damage, and how results differ from albuminuria.

Tubular proteinuria occurs when the kidney’s proximal tubules fail to reabsorb small proteins that normally pass through the glomerular filter and are almost completely...

Urine Albumin Test: Albuminuria, Kidney Disease, Normal Range, and Meaning

Learn how urine albumin testing and uACR detect kidney damage, what A1–A3 ranges mean, common causes of albuminuria, temporary elevations, CKD risk, and follow-up steps.

A urine albumin test measures albumin leaking from the blood into urine. Albumin is a large blood protein that healthy kidney filters largely retain,...

Urine Albumin-Creatinine Ratio (uACR) Test: Kidney Damage, Normal Range, and Albuminuria

Understand the urine albumin-creatinine ratio (uACR), including normal ranges, albuminuria categories, causes of high results, repeat testing, and kidney follow-up.

A urine albumin-creatinine ratio (uACR) test is one of the most useful ways to look for early kidney damage, especially in people with diabetes,...

Urine Free Light Chain Test: Kappa, Lambda, Ratio, Kidney Disease, and Myeloma

Understand urine free kappa and lambda light chains, urine ratio limitations, kidney effects, myeloma and MGRS links, companion tests, and abnormal result follow-up.

A urine free light chain test measures free kappa and free lambda immunoglobulin light chains that have passed into urine. These proteins are made...

Urine Immunofixation Test: Monoclonal Protein, Light Chains, and Plasma Cell Disorders

Learn what urine immunofixation detects, what a monoclonal kappa or lambda band means, how it differs from UPEP, and how positive results are evaluated.

A urine immunofixation test is a sensitive laboratory method used to determine whether urine contains a monoclonal immunoglobulin protein, especially free kappa or lambda...

Urine Microalbumin Test: High Levels, Kidney Damage, Diabetes, and Meaning

Learn what a urine microalbumin test measures, what high levels mean, how diabetes and blood pressure affect albuminuria, and when repeat kidney testing is needed.

A urine microalbumin test looks for small increases in albumin leaking into the urine, often before standard urine protein dipsticks become strongly positive. Despite...

Urine Protein Electrophoresis (UPEP) Test: Protein Types, M Protein, and Myeloma Screening

Understand UPEP results, M-spikes, monoclonal light chains, urine immunofixation, myeloma screening, kidney effects, 24-hour collection, and abnormal-result follow-up.

Urine protein electrophoresis (UPEP) separates proteins in a urine sample according to their electrical properties, creating a pattern that can reveal whether an abnormal...

Urine Protein Test: High Protein, Proteinuria, Kidney Disease, and Causes

Learn what a high urine protein test means, how proteinuria is measured, common kidney and temporary causes, key ranges, and when repeat testing or specialist care is needed.

A urine protein test checks whether more protein than expected is passing into the urine. Proteinuria can be a temporary finding after exercise, fever,...

Urine Protein-Creatinine Ratio (UPCR) Test: Proteinuria, Kidney Disease, and Result Meaning

Understand the UPCR test, including common ranges, causes of high urine protein, differences from uACR, collection limits, nephrotic-range values, and follow-up.

A urine protein-creatinine ratio (UPCR) estimates how much total protein is being lost in the urine while correcting for how concentrated the urine sample...

Urine Total Protein Test: High Levels, Kidney Disease, Proteinuria, and Meaning

Understand urine total protein results, including normal values, high-protein causes, differences from albumin testing, spot versus 24-hour samples, and kidney follow-up.

A urine total protein test measures the combined amount of protein present in urine rather than albumin alone. It can help detect and quantify...

Abnormal Urinalysis Results: Protein, Blood, Glucose, Ketones, Leukocytes, and Meaning

Understand abnormal urinalysis results for protein, blood, glucose, ketones, leukocytes, nitrites, and microscopy, including causes and follow-up tests.

An abnormal urinalysis result is a clue, not a diagnosis. A dipstick can detect protein, blood, glucose, ketones, leukocyte esterase, nitrites, bilirubin, and changes...

Complete Urinalysis Test: Chemical, Microscopic, and Physical Urine Findings

Learn what a complete urinalysis measures, including physical urine findings, dipstick chemistry, microscopy, normal patterns, abnormal results, and follow-up.

A complete urinalysis examines urine in three connected ways: physical appearance, chemical dipstick testing, and microscopic analysis of the sediment. Together, these measurements can...

Urinalysis for Diabetes: Glucose, Ketones, Protein, Specific Gravity, and Meaning

Learn how urinalysis is used in diabetes, including urine glucose, ketones, protein, albumin, specific gravity, DKA warning signs, and kidney follow-up.

Urinalysis can provide useful clues about diabetes, but it does not diagnose or monitor diabetes as accurately as blood glucose, A1C, or continuous glucose...

Urinalysis for Kidney Disease: Protein, Blood, Casts, Albumin, and Microscopy Findings

Understand urinalysis for kidney disease, including albumin, protein, blood, dysmorphic red cells, casts, tubular cells, microscopy patterns, and follow-up testing.

Urinalysis can reveal kidney damage before symptoms appear and can help identify which part of the kidney may be affected. The most useful findings...

Urinalysis for UTI: Leukocytes, Nitrites, Bacteria, WBCs, and Culture Follow-Up

Understand UTI urinalysis results for leukocytes, nitrites, WBCs, bacteria, pyuria, and culture, including false results and when follow-up testing is needed.

Urinalysis can support a urinary tract infection diagnosis by detecting leukocyte esterase, nitrites, white blood cells, bacteria, blood, and other changes, but it cannot...

Urinalysis Test: Dipstick, Microscopy, Normal Results, and What It Means

Learn how a urinalysis test works, including dipstick markers, urine microscopy, normal results, common abnormal patterns, test limitations, and follow-up.

A urinalysis is a common test that checks urine for physical, chemical, and microscopic clues about the urinary tract, kidneys, metabolism, and several other...