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In the near future Walk-In Lab will be providing Quest COVID-19 Antibody testing.  Learn more.

Kidney Tests

A kidney function test shows whether the organs are properly regulating the amount of water and salts we have in our body, and whether the kidneys are efficiently filtering blood and aiding in eliminating waste products. Further, renal function tests measure the levels of urea, creatinine, and certain dissolved salts that can help determine whether or not the kidneys are functioning properly and paint a picture of your overall health. Order an online kidney blood test today and take the first step in preventing and diagnosing renal disease.

Browse Kidney Tests Subcategories

Choose One Lab: LABCORP (LC) or QUEST (QD) or ALL

Walk-In Lab is contracted with LabCorp (LC) and Quest Diagnostics (QD) for routine lab testing. Please choose LC or QD to complete your order. If you prefer to receive a kit by mail for specimen collection, please see our Home Test Kits. LC and QD tests must be ordered separately.

LabCorp: Online lab testing is prohibited in MA, MD, NY, NJ and RI.

Quest Diagnostics: Online lab testing is prohibited in NY, NJ and RI.

  • Porphyrins Urine Test, Quantitative, Random

    The Porphyrins Urine Test is the initial test for Porphyrias.
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  • Vitamin D 1,25 Dihydroxy (Calcitriol) Blood Test

    A Vitamin D 1,25 Dihydroxy Blood Test is ordered when investigating a problem related to bone metabolism or parathyroid function, possible Vitamin D deficiency or malabsorption.
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  • Kidney #3 Extreme Blood and Urine Test Panel

    A Kidney #3 Extreme Blood and Urine Test Panel includes Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP-14), Urinalysis Complete with Microscopic Examination plus Parathyroid Hormone (PTH) Intact, Vitamin D, 25-hydroxy, CPK, Phosphorus, Protein Electrophoresis Serum, Protein and Creatinine, random urine, and Microalbumin Random Urine. 
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  • Chromatin (Nucleosomal) Antibody Blood Test

    May Special: Save 10% with coupon code MAYSALE. The Chromatin (Nucleosomal) Antibody Blood Test is useful in diagnosing SLE (systemic lupus erythmatosis). 
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  • Urinalysis Macroscopic, Dipstick

    This Urinalysis Macroscopic, Dipstick test is used to access the chemical constituents in the urine and the relationship to various diseases.
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  • Gastrin Blood Test

    The Gastrin Blood Test is used to detect an overproduction of gastrin, to help diagnose Zollinger-Ellison syndrome and G-cell hyperplasia, and to monitor for recurrence of a gastrin-producing tumor (gastrinoma).
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  • Complement Total (CH50) Blood Test

    May Special: Save 10% with coupon code MAYSALE. A CH50 test is used to help determine any protein abnormalities and deficiencies in the complement system.
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  • Aldosterone-Renin Activity Ratio Blood Test, LC/MS/M...

    Aldosterone-renin activity ratio blood test measures the levels of the hormones aldosterone and renin in your blood.
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  • Kidney #1 Baseline Blood and Urine Test Panel

    A Kidney #1 Baseline Blood and Urine Test Panel is a Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP-14) and Urinalysis Complete with Microscopic Examination.
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  • Kidney #2 Essential Blood and Urine Test Panel

    A Kidney #2 Essential Blood and Urine Test Panel includes a Complete Blood Count (CBC), Comprehensive Metabolic Panel (CMP-14), Urinalysis Complete with Microscopic Examination plus Parathyroid Hormone (PTH) Intact and Vitamin D, 25-hydroxy.
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  • Renal Function Blood Test Panel

    Renal Function Blood Test Panel evaluates kidney function, diagnose kidney-related disorders, screen for or monitor those with kidney disease.
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  • Erythropoietin (EPO) Serum Test

    An EPO Test is a blood disorder serum test used to determine erythropoietin level, an important hormone produced by the kidneys that is critical for the formation of red blood cells by the bone marrow.
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  • Osmolality Urine Test

    An Osmolality Urine Test is useful in monitoring the level of water in the body and to check the ability to produce urine.
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  • Creatinine Urine Test, Random

    A Creatinine Urine Test, Random is useful in monitoring kidney function. 
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  • Renin Activity Plasma Test

    A Plasma Renin helps determine the cause of hypertension in cases where signs of kidney disease are present.
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  • Urinalysis, Routine With Microscopic Examination on ...

    A routine Urinalysis with Microscopic Examination on Positives is used to detect abnormalities of urine; diagnose and manage renal diseases, urinary tract infection, urinary tract neoplasms, systemic diseases, and inflammatory or neoplastic diseases adjacent to the urinary tract.
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  • Beta 2 Microglobulin Serum Test

    A Beta 2 Microglobulin Serum Test evaluates the severity and prognosis of multiple myeloma, chronic lymphocytic leukemia, or non-Hodgkin's lymphoma; detect kidney damage and distinguish between glomerular and tubular kidney disorders.
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  • PTH Antibody Blood Test

    This PTH Antibody Blood Test is used to help evaluate autoimmune disorders involving parathyroid gland that may result in the production of anti-PTH & hypo-parathyroidism.
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  • Protein Total Urine Test, 24-Hour with Creatinine

    A Protein Total Urine Test, 24-Hour with Creatinine is used to evaluate and monitor kidney function, and to detect kidney damage.
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  • Microalbumin Urine Test, Random

    The random microalbumin urine test checks urine for the presence of the protein albumin in the blood. In individuals whose kidneys are working properly albumin is not present. However, if the kidneys are damaged or diseased, small amounts of albumin will be present in the urine.
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  • Protein Electrophoresis Blood Test, Reflex to IFE

    The Protein Electrophoresis Blood Test is used to help monitor or diagnose disease categories as acute or chronic inflammation, liver disorder, hypogammaglobulinemia, and possible monoclonal gammopathies.
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  • Cortisol Urine Test, Urinary Free, 24-Hour

    A Cortisol Urine Test, Urinary Free is used in the diagnosis of Cushing syndrome (CS) requires evidence of cortisol hypersecretion. While serum cortisol levels fluctuate unpredictably and are strongly dependent on concurrent cortisol-binding globulin (CBG) levels, a 24-hour urine specimen integrates the cortisol production for an entire day and is not affected by CBG. Urinary cortisol reflects the portion of serum-free cortisol filtered by the kidney, and correlates well with cortisol secretion rate.
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  • Microalbumin Urine Test, 24-Hour

    A Microalbumin Urine Test is used to check urine for the presence albumin, which is normally found in the blood and filtered by the kidneys.
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  • Comprehensive Metabolic Panel (CMP-14) with eGFR Blo...

    The CMP-14 is a broad screening test used to evaluate kidney and liver function, electrolytes and glucose.
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  • Basic Metabolic Panel (BMP8) Blood Test

    A Basic Metabolic Panel (BMP8) Blood Test is a regularly ordered group of 8 tests that gives important information about the current status of your health.
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  • Urine Culture, Comprehensive

    An Urine Culture, Comprehensive is ordered if Routine Urine Culture was not diagnostic.
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  • Urine Culture, Routine

    A Urine Culture, Routine detects and identifies bacteria and yeast in the urine.
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  • Urinalysis, Complete with Microscopic Examination

    A Urinalysis, Complete with Microscopic Examination is useful in the evaluation of conditions such as urinary tract infection (UTI), dehydration, and kidney stones.
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  • Electrolyte Blood Test Panel

    The Electrolyte Panel is performed to check for kidney problems, acids in your blood, a sodium or potassium problem and diabetes.
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  • Prealbumin Blood Test

    This Prealbumin Blood Test evaluates protein malnutrition, total parenteral nutrition, and liver dysfunction.
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  • Protein and Creatinine Urine Test, Random

    A Protein and Creatinine Urine Test, Random measures the protein/creatinine ratio in a first-morning or random untimed "spot" urine specimen is recommended testing to ascertain chronic kidney disease.
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  • Microalbumin/Creatinine Ratio Urine Test, Random

    The Microalbumin/Creatinine Ratio Urine Test, Random is a urine test that may help to determine if kidneys are functioning normally. This test is an early indicator of kidney failure.
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  • Uric Acid Blood Test

    An Uric Acid Blood Test is used to help diagnose the cause of recurrent kidney stones and to monitor people with gout for stone formation.
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  • Sodium Urine Test, Random

    A Sodium Urine Test Random Sodium Urine Test is a work-up volume depletion, acute renal failure, acute oliguria, and differential diagnosis of hyponatremia.
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  • Creatinine Serum Test

    A Creatinine Serum Test is a renal function test, providing a rough approximation of glomerular filtration.
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  • Oxalate Urine Test, Quantitative, 24-Hour

    That Oxalate Urine Test looks for the presence of certain toxic substances in the intestinal tract.
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  • Protein Electrophoresis Urine Test, Random

    A Protein Electrophoresis Urine Test is a graph with quantitation of total urine protein, urine albumin, urine N1, urine N2, urine N3-globulin fractions if present; quantitation (in %) of M-spike if present.
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  • Lactic Acid Dehydrogenase (LD) Blood Test

    May Special: Save 10% with coupon code MAYSALE. A LD or LDH Blood Test measures lactic acid dehydrogenase an enzyme that is elevated in case of any tissue damage or injury.
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  • Protein Electrophoresis Serum Test

    A Protein Electrophoresis Serum Test measures the types of protein in the fluid (serum) part of a blood sample.
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  • Parathyroid Hormone (PTH) Intact Blood Test

    A PTH Intact Blood Test diagnoses parathyroid disease and other diseases of calcium homeostasis; monitoring patients undergoing renal dialysis.
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  • Protein Electrophoresis and Total Protein Blood Test

    Measures the types of protein in the fluid (serum) part of a blood sample.
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  • Phosphorus Serum Test

    Phosphorus testing may be performed to measure high or low levels of phosphorus to determine a variety of differential diagnoses such as: dehydration, renal disease, liver disease, diabetic ketoacidosis. Phosphate levels may increase during the last trimester of pregnancy.
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  • Urea Nitrogen (BUN) Serum Test

    A Urea Nitrogen (BUN) Serum Test is used to measure the amount of urea in the blood.
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  • Cystatin C Blood Test

    A Cystatin C Blood Test is used to screen for and monitor kidney dysfunction in those with known or suspected kidney disease.
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  • Potassium Blood Test, RBC

    The Potassium Blood Test, RBC provides a measurement of intracellular Potassium levels which can indicate deficiency sooner than an ordinary blood test.
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  • Ammonia Plasma Test

    This Ammonia Plasma Test measures the amount of Ammonia in the blood, a compound produced by intestinal bacteria and by cells in the body during the digestion of protein.
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  • Albumin Serum Test

    Albumin blood test evaluates nutritional status, blood oncotic pressure, evaluation of renal disease with proteinuria, and other chronic diseases.
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  • Calcium Ionized Serum Test

    The Calcium Ionized Serum Test measures the amount of Ionized Calcium, also known as free calcium, in the blood.
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  • Alkaline Phosphatase Blood Test

    The alkaline phosphatase blood test measures the level of the enzyme alkaline phosphatase in the blood.
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  • Antineutrophil Cytoplasmic Antibodies (ANCA) Blood T...

    May Special: Save 10% with coupon code MAYSALE. The ANCA Blood Test is used to detect Antineutrophil cytoplasmic autoantibodies which (ANCA) are a serological marker associated with vasculitis and glomerulonephritis.
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  • Fluoride Blood Test

    The Fluoride Blood Test is typically ordered when someone is experiencing symptoms of fluoride exposure especially if they have had contact with chemicals containing fluoride or work in an industry where airborne exposure to fluoride is common.
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  • Antidiuretic Hormone (ADH) Profile Blood Test

    An ADH Profile Blood Test includes both ADH and osmolalityADH helps regulate water balance in the body by controlling the amount of water the kidneys reabsorb. The kidneys react to ADH by conserving water and producing urine that is more concentrated.
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  • Aldosterone Blood Test, LC-MS

    The aldosterone blood test is used to evaluate patients with hypertension and for the possibility of hyperaldosteronism.
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  • Complement C4 Blood Test

    May Special: Save 10% with coupon code MAYSALE. This Complement C4 Blood Test measures the amount of Complement C4 protein in your blood. These proteins are part of your complement system, an important part of your immune system that helps kill bacteria and viruses causing disease.
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  • Complement C3 Blood Test

    May Special: Save 10% with coupon code MAYSALE. A Complement C3 Blood Test is used to determine whether deficiencies or abnormalities in the proteins that are part of the complement system are contributing to increased infections or increased autoimmune activity; and to monitor the activity of autoimmune diseases.
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