Topic
Kidney & Urinary Health
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Nov 3, 2026
Frequent Urination: Why Am I Peeing So Much All of a Sudden?
Peeing more than usual is most often fluids, caffeine or alcohol. When it is new and does not go away, the common medical causes are a urinary infection, high blood sugar, an overactive bladder or an enlarged prostate. Learn what counts as frequent, how a urinalysis tells the causes apart, which blood tests come next, and when to get prompt care.
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Nov 2, 2026
Cloudy Urine: What It Means, Common Causes and How to Read a Cloudy Urinalysis
Cloudy urine is often harmless, from phosphate crystals in alkaline urine or a sample that stood too long, but it can also be a sign of a urinary tract infection. Learn the common causes in women and men, how to read "Appearance: cloudy" next to the other lines on a urinalysis, and what to do next.
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Nov 2, 2026
Crystals in Urine: What Calcium Oxalate, Uric Acid and Amorphous Crystals Mean
A few crystals on a urinalysis are usually normal, and many form after the sample leaves the body. Learn how to read the crystal type, the amount and the urine pH together, which crystals always deserve follow-up, how crystals relate to kidney stones, and what to do next.
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Nov 2, 2026
Dark Urine: What Dark Yellow, Orange or Brown Urine Means and What Test Tells You
Dark yellow or amber urine is usually concentrated urine from too little fluid. Brown, tea or cola-colored urine is different: it can come from bilirubin, blood or muscle protein. Learn how to tell them apart, which urinalysis lines and blood tests separate the causes, and when to get prompt care.
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Oct 28, 2026
Mucus in Urine: What It Means on a Urinalysis and When It Matters
A small or moderate amount of mucus in urine is usually normal. A large amount, or mucus next to signs of infection on the same report, is what needs follow-up. Learn what urine mucus is, how it differs from casts, why samples from women can show more, and what to do next.
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Oct 27, 2026
Nitrites in Urine: What a Positive or Negative Result Means
Nitrites in urine usually point to bacteria in the urinary tract, but the result only makes sense next to leukocyte esterase, white blood cells, bacteria and epithelial cells on the same report. Learn what a positive or negative nitrite means, when it is not a UTI, and what happens next.
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Oct 23, 2026
Blood in Urine Test Results: What RBC, Trace and Occult Blood Mean
A urine test that shows blood, trace blood, occult blood or red blood cells is common and often has a temporary cause. Learn how to read the two blood lines on a urinalysis, what counts as a high RBC result, and what happens next.
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Oct 11, 2026
Kidney Disease Symptoms: Early Signs, and the Blood and Urine Tests That Find It
Early kidney disease usually causes no symptoms. Here are the signs that appear as kidney function falls, who should get checked, and which blood and urine tests answer which question.
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Oct 30, 2025
Hydration for Healthspan: Beyond the 8 Daily Glasses
Hydration shapes energy, cognition, and aging biology. See why blanket rules fall short and use a practical protocol for fluids, electrolytes, and timing.
Kidney and urinary health tests
View current details, availability, and member pricing.
Cystatin C with Estimated Glomerular Filtration Rate (eGFR) Blood Test
A kidney filtration marker that stays accurate when muscle mass throws off creatinine.
Comprehensive Metabolic Panel (CMP)
A 14-marker snapshot of kidney function, liver function, electrolytes, and blood sugar in one draw.
Urinalysis, Complete Test with Reflex to Urine Culture
A broad screen of the urine that flags infection, kidney issues, blood sugar problems, and dehydration in one sample.