What does it mean to have hyaline casts in urine?

Asked By: Lelia Makhlinsky | Last Updated: 26th March, 2020
Category: medical health infectious diseases
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Granular casts are a sign of underlying kidney disease. However, they are nonspecific and may be found in people with many different kidney disorders. Hyaline casts are usually caused by dehydration, exercise, or diuretic medicines. Red blood cell casts are a sign of bleeding into the kidney tubule.

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Also to know is, are hyaline casts normal in urine?

Casts: Casts are formed in the tubules of they kidney when the tubules secrete a protein called Tamm-Horsfall protein. These casts are known as hyaline casts and can be present in normal adults on the order of 0-5 per LPF. Strenuous exercise can cause more hyaline casts to be present.

One may also ask, are hyaline casts dangerous? Hyaline casts are the type most commonly seen in the urine sediment. Pathologically, hyaline casts may be seen with congestive heart failure, and may be seen together with other types of casts in a variety of renal diseases.

Subsequently, one may also ask, what does it mean to have casts in urine?

Casts are the result of solidification of material (protein) in the lumen of the kidney tubules, more specifically in the nephron. If a cast is seen in the urine, kidney disease or in- volvement exists; the presence of casts indicates kidney (renal) disease rather than lower urinary tract disease.

What are hyaline casts?

Hyaline Casts. Casts are clusters of urinary sediment elements (red blood cells, white blood cells, fat bodies, etc.) wrapped in a protein matrix. Cast formation necessarily occurs in the kidney tubules, and the the contents of the casts indicate the nature of the abnormalities occurring in the kidney itself.

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What are hyaline casts indicative of?

Hyaline casts are usually caused by dehydration, exercise, or diuretic medicines. Red blood cell casts are a sign of bleeding into the kidney tubule. They are seen in many diseases affecting the glomerulus, including IgA nephropathy, lupus nephritis, Goodpasture syndrome, and granulomatosis with polyangiitis.

What does granular casts in urine mean?

Casts are clusters of urinary sediment elements (red blood cells, white blood cells, fat bodies, etc.) Granular casts are casts that contain either proteins, tubular cells or leukocytes that have broken down. The presence of granular casts in the urine does not indicate the type of kidney disease present.

What is the normal range for casts in urine?

Normally, healthy people may have a few (0–5) hyaline casts per low power field (LPF). After strenuous exercise, more hyaline casts may be detected. Other types of casts are associated with different kidney diseases, and the type of casts found in the urine may give clues as to which disorder is affecting the kidney.

What is the first sign of bladder cancer?

In most cases, blood in the urine (called hematuria) is the first sign of bladder cancer. There may be enough blood to change the color of the urine to orange, pink, or, less often, dark red.

What causes protein in urine?


People with proteinuria have urine containing an abnormal amount of protein. The condition is often a sign of kidney disease. But filters damaged by kidney disease may let proteins such as albumin leak from the blood into the urine. Proteinuria can also be a result of overproduction of proteins by the body.

What does fat in urine mean?

Ketosis occurs when your body begins to burn fat instead of glucose for energy. Ketones are a byproduct of this process and can be detected in your breath, blood, or urine when your body's in ketosis. Having a high number of ketones in your urine can make it look oily.

What do urinalysis results mean?

A urinalysis is a test of your urine. A urinalysis is used to detect and manage a wide range of disorders, such as urinary tract infections, kidney disease and diabetes. A urinalysis involves checking the appearance, concentration and content of urine. Abnormal urinalysis results may point to a disease or illness.

Why do I have white blood cells in urine but no infection?

Sterile pyuria
It is possible to have white blood cells in the urine without a bacterial infection. Sterile pyuria refers to the persistent presence of white blood cells in the urine when no bacteria are found to be present by laboratory examination.

What type of cast is most commonly found in urine?

The most common type of cast, hyaline cast are solidified Tamm–Horsfall mucoprotein secreted from the tubular epithelial cells of individual nephrons.

How do I report a cast to urine?


Casts are quantified for reporting as the number seen per low power field (10x objective) and classified as to type (e.g., waxy casts, 5-10/LPF). Casts in urine from normal individuals are few or none (and are usually hyaline or granular in nature). An absence of casts does not rule out renal disease.

What are the causes of glomerulonephritis?

What causes acute glomerulonephritis? The acute disease may be caused by infections such as strep throat. It may also be caused by other illnesses, including lupus, Goodpasture's syndrome, Wegener's disease, and polyarteritis nodosa. Early diagnosis and prompt treatment are important to prevent kidney failure.

What does bacteria in urine mean?

Asymptomatic bacteriuria means you have bacteria in your urine but you have no symptoms of infection. A small number of bacteria may be found in the urine of many healthy people. This is usually considered to be harmless. However, a certain level of bacteria can mean that the bladder, urethra, or kidneys are infected.

What is Pyuria?

Pyuria is the condition of urine containing white blood cells or pus. Defined as the presence of 6-10 or more neutrophils per high power field of unspun, voided mid-stream urine, it can be a sign of a bacterial urinary tract infection.

What is nephritic syndrome?

Nephritic syndrome is a syndrome comprising signs of nephritis, which is kidney disease involving inflammation. By contrast, nephrotic syndrome is characterized by proteinuria and a constellation of other symptoms that specifically do not include hematuria.

What are casts made of?


An orthopedic cast, or simply cast, is a shell, frequently made from plaster or fiberglass, encasing a limb (or, in some cases, large portions of the body) to stabilize and hold anatomical structures, most often a broken bone (or bones), in place until healing is confirmed.

What is IgA nephropathy?

IgA nephropathy (nuh-FROP-uh-thee), also known as Berger's disease, is a kidney disease that occurs when an antibody called immunoglobulin A (IgA) builds up in your kidneys. This results in local inflammation that, over time, can hamper your kidneys' ability to filter waste from your blood.

What does red blood cells in urine mean?

A high count of red blood cells in the urine can indicate infection, trauma, tumors, or kidney stones. If red blood cells seen under microscopy look distorted, they suggest kidney as the possible source and may arise due to kidney inflammation (glomerulonephritis).