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    Homocysteine

    This test measures the amount of homocysteine in the blood. Homocysteine is a type of amino acid that is present throughout the body in all cells in small amounts.

    Homocysteine

    This test measures the amount of homocysteine in the blood. Homocysteine is a type of amino acid that is present throughout the body in all cells in small amounts.

    Homocysteine

    $70

    SKU: 31789 For: , , , ,

    Quest Diagnostics Test Code: 31789

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    Methylmalonic Acid, Blood

    This test measures the levels of Methylmalonic acid (MMA) in the blood. It is a very useful, sensitive and early test to measure for vitamin B12 deficiency. Also Known As: MMA Blood

    Methylmalonic Acid, Blood

    This test measures the levels of Methylmalonic acid (MMA) in the blood. It is a very useful, sensitive and early test to measure for vitamin B12 deficiency.

    Also Known As: MMA Blood

    Methylmalonic Acid, Blood

    $101

    SKU: 34879 For:

    Quest Diagnostics Test Code: 34879

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    Methylmalonic Acid, Urine

    This test measures the levels of Methylmalonic acid (MMA) in the blood. It is a very useful, sensitive and early test to measure for vitamin B12 deficiency. Also Known As: MMA Urine

    Methylmalonic Acid, Urine

    This test measures the levels of Methylmalonic acid (MMA) in the blood. It is a very useful, sensitive and early test to measure for vitamin B12 deficiency.

    Also Known As: MMA Urine

    Methylmalonic Acid, Urine

    $152

    SKU: 91032 For:

    Quest Diagnostics Test Code: 91032

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    Vitamin A

    Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption. Also Known As: Retinol

    Vitamin A

    Vitamin A is critical for vision, growth, and many cell functions. High concentrations of Vitamin A are seen with renal failure, but this is not associated with toxicity and excessive ingestion. High concentrations are associated with bone fractures. Low concentrations of Vitamin A are consistent with fat malabsorption.

    Also Known As: Retinol

    Vitamin A

    $68

    SKU: 921 For: , , ,

    Quest Diagnostics Test Code: 921

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    Vitamin B1 (Whole Blood)

    Vitamin B1 is required for branched-chain amino acid and carbohydrate metabolism. Vitamin B1 deficiency is most often due to alcoholism or chronic illness. In the early stage, patients with vitamin B1 deficiency exhibit anorexia, irritability, apathy, and generalized weakness. Prolonged deficiency causes beriberi. Also Known As: Thiamine, Thiamin

    Vitamin B1 (Whole Blood)

    Vitamin B1 is required for branched-chain amino acid and carbohydrate metabolism. Vitamin B1 deficiency is most often due to alcoholism or chronic illness. In the early stage, patients with vitamin B1 deficiency exhibit anorexia, irritability, apathy, and generalized weakness. Prolonged deficiency causes beriberi.

    Also Known As: Thiamine, Thiamin

    Vitamin B1 (Whole Blood)

    $71

    SKU: 5042 For: , , ,

    Quest Diagnostics Test Code: 5042

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    Vitamin B12

    Determining the level of Vitamin B12 in the blood is important because its deficiency can cause serious health issues. The human body can’t produce B12, so the diet is its only source Also Known As: Cobalamin

    Vitamin B12

    Determining the level of Vitamin B12 in the blood is important because its deficiency can cause serious health issues. The human body can’t produce B12, so the diet is its only source

    Also Known As: Cobalamin

    Vitamin B12

    $50

    SKU: 927 For: , , ,

    Quest Diagnostics Test Code: 927

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    Vitamin B12 and Folates

    Determining the level of Vitamin B12 in the blood is important because its deficiency can cause serious health issues. The human body can’t produce B12, so the diet is its only source

    Vitamin B12 and Folates

    Determining the level of Vitamin B12 in the blood is important because its deficiency can cause serious health issues. The human body can’t produce B12, so the diet is its only source

    Vitamin B12 and Folates

    $60

    SKU: 7065 For: , , ,

    Quest Diagnostics Test Code: 7065

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    Vitamin B6

    This test checks for Vitamin B6 levels in the body. Also Known As: Pyridoxal-5-Phosphate, p5p

    Vitamin B6

    This test checks for Vitamin B6 levels in the body.

    Also Known As: Pyridoxal-5-Phosphate, p5p

    Vitamin B6

    $94

    SKU: 926 For:

    Quest Diagnostics Test Code: 926

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    Vitamin B7

    Checks for level of Vitamin B7, classified as a B-complex vitamin and also known as biotin, required by the body. Also Known As: Biotin

    Vitamin B7

    Checks for level of Vitamin B7, classified as a B-complex vitamin and also known as biotin, required by the body.

    Also Known As: Biotin

    Vitamin B7

    $276

    SKU: 391 For: , , ,

    Quest Diagnostics Test Code: 391

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    Vitamin C

    Vitamin C is an antioxidant involved in connective tissue metabolism, drug-metabolizing systems, and mixed-function oxidase systems to list a few. Vitamin C deficiency causes scurvy; manifestations include impaired formation of mature connective tissue, bleeding into the skin, weakness, fatigue, and depression. Also Known As: Ascorbic Acid

    Vitamin C

    Vitamin C is an antioxidant involved in connective tissue metabolism, drug-metabolizing systems, and mixed-function oxidase systems to list a few. Vitamin C deficiency causes scurvy; manifestations include impaired formation of mature connective tissue, bleeding into the skin, weakness, fatigue, and depression.

    Also Known As: Ascorbic Acid

    Vitamin C

    $102

    SKU: 929 For: , , ,

    Quest Diagnostics Test Code: 929

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    Vitamin D, 1, 25-dihydroxy

    Measurement of serum 25-OH vitamin D concentrations provide a good index of circulating vitamin D activity in patients not suffering from renal disease. A vitamin D deficiency can lead to bone diseases such as rickets and osteomalacia. Above normal levels can lead to hypercalcemia Also Known As: Calcitriol; 1,25-Dihydroxycholecalciferol

    Vitamin D, 1, 25-dihydroxy

    Measurement of serum 25-OH vitamin D concentrations provide a good index of circulating vitamin D activity in patients not suffering from renal disease. A vitamin D deficiency can lead to bone diseases such as rickets and osteomalacia. Above normal levels can lead to hypercalcemia

    Also Known As: Calcitriol; 1,25-Dihydroxycholecalciferol

    Vitamin D, 1, 25-dihydroxy

    $87

    SKU: 16558 For: , , , ,

    Quest Diagnostics Test Code: 16558

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    Vitamin D, 25-Hydroxy

    This test gives an indication of the vitamin D status of an individual. A deficiency in vitamin D leads to a bone disorder called rickets. Also Known As: 25-Hydroxycalciferol

    Vitamin D, 25-Hydroxy

    This test gives an indication of the vitamin D status of an individual. A deficiency in vitamin D leads to a bone disorder called rickets. Also Known As: 25-Hydroxycalciferol

    Vitamin D, 25-Hydroxy

    $58

    SKU: 17306 For: , , , , ,

    Quest Diagnostics Test Code: 17306

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    Vitamin E

    Deficiency of vitamin E may cause extensive neuropathy in young children and, in addition, is suspect as a possible cause of motor and sensory neuropathy in older children and in adults. One likely cause of vitamin E deficiency is intestinal malabsorption, resulting from bowel disease, pancreatic disease, or chronic cholestasis. Also Known As: Alpha Tocopherol, Vitamin E1

    Vitamin E

    Deficiency of vitamin E may cause extensive neuropathy in young children and, in addition, is suspect as a possible cause of motor and sensory neuropathy in older children and in adults. One likely cause of vitamin E deficiency is intestinal malabsorption, resulting from bowel disease, pancreatic disease, or chronic cholestasis.

    Also Known As: Alpha Tocopherol, Vitamin E1

    Vitamin E

    $64

    SKU: 931 For: , , ,

    Quest Diagnostics Test Code: 931

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    Vitamin K1

    Used for differential diagnosis of coagulation disorders. Vitamin K is a group of structurally similar, fat-soluble vitamins the human body requires for complete synthesis of certain proteins that are prerequisites for blood coagulation and which the body also needs for controlling binding of calcium in bones and other tissues. Also Known As: Phylloquinone, Phytonadione

    Vitamin K1

    Used for differential diagnosis of coagulation disorders. Vitamin K is a group of structurally similar, fat-soluble vitamins the human body requires for complete synthesis of certain proteins that are prerequisites for blood coagulation and which the body also needs for controlling binding of calcium in bones and other tissues.

    Also Known As: Phylloquinone, Phytonadione

    Vitamin K1

    $150

    SKU: 36585 For: , , ,

    Quest Diagnostics Test Code: 36585