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Labcorp
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Quest Diagnostics
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Showing 745–768 of 1013 results
Phosphate, Random Urine without Creatinine
Labcorp
Not offered
Phosphorus is present in many foods, with a mean intake of approximately 1500 mg per day for adult males and about 1000 mg per day for adult females. Absorbed phosphate, under the influence of parathyroid hormone, is readily excreted in the kidney. Measurement of urinary phosphorus generally reflects dietary intake; hence, day-to-day excretion may show considerable variation.
Phosphorus
This test measures the level of phosphorus in serum. Serum phosphorus levels should be correlated with serum calcium levels to be of diagnostic value. Phosphorus is used to help diagnose and treat kidney diseases, parathyroid gland disorders, and Vitamin D imbalances.
- Phosphorus Measures phosphorus, a mineral important for bone health, energy production, and cell function, closely regulated alongside calcium.
This test measures the level of phosphorus in serum. Serum phosphorus levels should be correlated with serum calcium levels to be of diagnostic value. Phosphorus is used to help diagnose and treat kidney diseases, parathyroid gland disorders, and Vitamin D imbalances.
- Phosphorus Measures phosphorus, a mineral important for bone health, energy production, and cell function, closely regulated alongside calcium.
Phosphorylated Tau 181 (pTau-181)
This test measures the concentration of p-Tau181 protein in the blood. Elevated levels of p-Tau181 are associated with tauopathies, including Alzheimer's disease, and can be used to differentiate Alzheimer's from other neurodegenerative conditions. This biomarker is particularly valuable for early diagnosis, monitoring disease progression, and evaluating response to therapeutic interventions in Alzheimer's disease and related disorders.
- Phosphorylated Tau 181 (p-tau181) A blood-based marker of a protein involved in Alzheimer's disease pathology. An emerging tool being used to help assess Alzheimer's risk.
This test measures the concentration of p-Tau181 protein in the blood. Elevated levels of p-Tau181 are associated with tauopathies, including Alzheimer's disease, and can be used to differentiate Alzheimer's from other neurodegenerative conditions. This biomarker is particularly valuable for early diagnosis, monitoring disease progression, and evaluating response to therapeutic interventions in Alzheimer's disease and related disorders.
- Phosphorylated Tau 181 (p-tau181) A blood-based marker of a protein involved in Alzheimer's disease pathology. An emerging tool being used to help assess Alzheimer's risk.
Phthalic Anhydride (k79) IgE
Labcorp
Not offered
This test measures the IgE antibody response to phthalic anhydride, a chemical used in making resins. Exposure to this substance can cause eye, respiratory, and skin irritation, and may lead to occupational asthma. It's a quantitative assay that helps in diagnosing allergic diseases when combined with other clinical information.
Pigeon Feathers (e215) IgE
Labcorp
Not offered
This test measures the body's immune response to pigeon feathers by checking the level of specific IgE antibodies in the serum. It's useful for individuals who may be experiencing allergic reactions to pigeon feathers, helping to identify or confirm the source of allergy symptoms.
Pineapple (f210) IgE
Labcorp
Not offered
This test checks for allergic reactions to pineapple by measuring the IgE antibodies in your blood. It's a specific way to find out if your body reacts negatively to pineapple, which can be important for people with food allergies.
Pine Nut (f253) IgE
Labcorp
Not offered
This test checks for allergic reactions to pine nuts by measuring the IgE antibodies in your serum. It's crucial for individuals who suspect they might have a pine nut allergy, which can lead to symptoms like itching, swelling, and in severe cases, anaphylaxis.
Pine (t213) IgE
Labcorp
Not offered
This test measures the body's immune response to pine allergens by detecting specific IgE antibodies in the serum. It's crucial for diagnosing pine allergies and guiding treatment plans.
Pinworm Tape Test
The pinworm tape test checks for pinworm infection by collecting eggs from the skin around the anus. It helps diagnose infection with Enterobius vermicularis, a common intestinal parasite.
The pinworm tape test checks for pinworm infection by collecting eggs from the skin around the anus. It helps diagnose infection with Enterobius vermicularis, a common intestinal parasite.
Pistachio (f203) IgE
Labcorp
Not offered
This test checks for allergic reactions to pistachios by measuring the IgE antibodies in your blood. It's crucial for diagnosing pistachio allergies and can help you manage potential allergic reactions more effectively.
PLAC Test (Lp-PLA2)
Quest
Not offered
The PLAC® test for Lp-PLA2 activity is an enzyme assay that quantitatively measures Lp-PLA2 activity in blood samples. It can help predict the risk of coronary heart disease in patients with no prior history of cardiovascular events.
- Lipoprotein-Associated Phospholipase A2 (Lp-PLA2) Measures an enzyme linked to inflammation within artery walls, used as an additional marker to help assess cardiovascular risk.
Plasminogen Activity
Labcorp
Not offered
Decreased plasminogen activity may be inherited or acquired. Acquired deficiencies may occur with: tranexamic acid and L-asparginase use, disseminated intravascular coagulation (DIC), liver disease, during and after thrombolytic therapy, sepsis, and hyperthyroidism. Plasminogen activity is developmentally regulated, reaching adult levels at approximately 6 months of age. As a positive acute phase reactant, increased levels are associated with infection, trauma, surgery, inflammation, and malignancy.
Platelet Count
Platelet Count measures the number of platelets in the blood. Platelets are essential for blood clotting and wound healing, and abnormal counts can indicate bleeding disorders, bone marrow issues, or inflammatory conditions.
- Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Platelet Count measures the number of platelets in the blood. Platelets are essential for blood clotting and wound healing, and abnormal counts can indicate bleeding disorders, bone marrow issues, or inflammatory conditions.
- Platelet Count Cell fragments that help your blood clot. Counted to screen for bleeding or clotting risk and various blood disorders.
Plum (f255) IgE
Labcorp
Not offered
This test measures the body's allergic response to plums by checking for specific IgE antibodies in the serum. It's useful for individuals who suspect they might have a plum allergy, showing symptoms after consuming this fruit.
Poppy Seed (f224) IgE
Labcorp
Not offered
This test measures the body's immune response to poppy seeds by checking for specific IgE antibodies in the serum. It's crucial for diagnosing allergies to poppy seeds, which can cause symptoms ranging from mild to severe in sensitive individuals.
Pork (f26) IgE
Labcorp
Not offered
This test measures the level of IgE antibodies in response to pork in your blood. It's used to help diagnose allergies to pork, which can cause symptoms like hives, stomach pain, or even more severe reactions. By measuring IgE antibodies specific to pork, this test can confirm if you have a pork allergy.
Potassium
Potassium is an essential electrolyte that helps regulate nerve function, muscle contractions, and heart rhythm. Measuring serum potassium levels is critical for assessing electrolyte balance and diagnosing conditions like dehydration, kidney disorders, and cardiac abnormalities.
- Potassium An essential electrolyte that plays a critical role in heart rhythm, muscle function, and nerve signaling.
Potassium is an essential electrolyte that helps regulate nerve function, muscle contractions, and heart rhythm. Measuring serum potassium levels is critical for assessing electrolyte balance and diagnosing conditions like dehydration, kidney disorders, and cardiac abnormalities.
- Potassium An essential electrolyte that plays a critical role in heart rhythm, muscle function, and nerve signaling.
Potassium, 24-Hour Urine with Creatinine
Labcorp
Not offered
This test is crucial for evaluating hydration status and the overall balance of electrolytes in the body. It involves analyzing a 24-hour collection of urine to measure potassium levels, which play a key role in nerve function, muscle control, and heart health.
Potassium, Random Urine without Creatinine
Labcorp
Not offered
This test measures the amount of potassium in urine to help diagnose conditions like primary aldosteronism, dehydration, salicylate toxicity, or malabsorption. It's useful for understanding how the body is managing potassium levels, which is crucial for heart and muscle function.
Potassium, RBC
Labcorp
Not offered
This test assesses potassium levels red blood cells to determine intracellular potassium status, which may provide a more accurate assessment of total body potassium levels than serum analysis.
Potassium, Serum
Labcorp
Not offered
Monitoring potassium levels is crucial for maintaining electrolyte balance and aiding in the diagnosis and treatment of conditions associated with abnormal blood potassium levels. High potassium levels may indicate adrenal cortical insufficiency, acute renal failure, or diabetic acidosis, while low levels could be a result of diuretic use or renal tubular acidosis.
- Potassium An essential electrolyte that plays a critical role in heart rhythm, muscle function, and nerve signaling.
Potato (f35) IgE
Labcorp
Not offered
This test checks for an allergic reaction to potatoes by measuring the IgE antibodies in your blood. It's a specific way to find out if potatoes are causing allergy symptoms.
Prealbumin
This test measures the concentration of prealbumin in the blood. The serum concentration of prealbumin proteins reflects the synthesis capacity of the liver and is markedly diminished in malnutrition and other conditions.
- Pre-Albumin A protein made by the liver that reflects recent (days, not weeks) nutritional and protein status — useful for tracking short-term nutrition changes.
This test measures the concentration of prealbumin in the blood. The serum concentration of prealbumin proteins reflects the synthesis capacity of the liver and is markedly diminished in malnutrition and other conditions.
- Pre-Albumin A protein made by the liver that reflects recent (days, not weeks) nutritional and protein status — useful for tracking short-term nutrition changes.
Pregnenolone, LC/MS
Pregnenolone is a precursor steroid hormone involved in the synthesis of other hormones including progesterone, cortisol, and testosterone. It plays a key role in hormone balance, stress response, and overall endocrine function.
- Pregnenolone A hormone made from cholesterol that's the starting building block for all your other steroid hormones, including cortisol, DHEA, and sex hormones.
Pregnenolone is a precursor steroid hormone involved in the synthesis of other hormones including progesterone, cortisol, and testosterone. It plays a key role in hormone balance, stress response, and overall endocrine function.
- Pregnenolone A hormone made from cholesterol that's the starting building block for all your other steroid hormones, including cortisol, DHEA, and sex hormones.