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Test Catalog

PBR - Overview: Phenobarbital, Serum

Monitoring for appropriate therapeutic concentration of phenobarbital Assessing compliance or toxicity

TPIC - Overview: Triosephosphate Isomerase Enzyme Activity, Blood

Evaluating individuals with chronic nonspherocytic hemolytic anemia Evaluating individuals with early onset neurologic impairment Genetic counseling for families with triosephosphate isomerase deficiency

BWRS - Overview: Beckwith-Wiedemann Syndrome/Russell-Silver Syndrome, Molecular Analysis, Varies

Confirming a clinical diagnosis of Beckwith-Wiedemann syndrome (BWS) or Russell-Silver syndrome (RSS) Prenatal diagnosis if there is a high suspicion of BWS/RSS based on ultrasound findings or in families at risk for BWS/RSS This assay...

APOA1 - Overview: Apolipoprotein A1, Serum

Evaluating risk for atherosclerotic cardiovascular disease Aiding in the detection of Tangier disease

MTHX - Overview: Methotrexate, Serum

Determining whether methotrexate is being cleared appropriately and verifying that a nontoxic concentration has been attained following therapy

QUAD1 - Overview: Quad Screen (Second Trimester) Maternal, Serum

Prenatal screening for open neural tube defect (alpha-fetoprotein only), trisomy 21 (alpha-fetoprotein, human chorionic gonadotropin, estriol, and inhibin A) and trisomy 18 (alpha-fetoprotein, human chorionic gonadotropin, and estriol)

NITF - Overview: Nitrogen, Total, Feces

Determining nitrogen balance, when used in conjunction with 24-hour urine nitrogen measurement Assessing nutritional status (protein malnutrition) Evaluating protein catabolism

IRON - Overview: Iron, Serum

Aiding in the evaluation of iron deficiency and iron overload diseases in combination with total iron binding capacity and percent saturation Assessment of acute iron poisoning

A2PI - Overview: Alpha-2 Plasmin Inhibitor, Plasma

Diagnosing congenital alpha-2 plasmin inhibitor deficiencies (rare) Providing a complete assessment of disseminated intravascular coagulation, intravascular coagulation and fibrinolysis, or hyperfibrinolysis (primary fibrinolysis), when...

CARU - Overview: Cyclic Adenosine Monophosphate (cAMP), Urinary Excretion, Serum and Urine

Differential diagnosis of hypercalcemia As an adjunct to serum parathyroid hormone measurements, especially in the diagnosis of parathyroid hormone resistance states, such as pseudohypoparathyroidism

CA - Overview: Calcium, Total, Serum

Diagnosis and monitoring of a wide range of disorders including diseases of bone, kidney, parathyroid gland, or gastrointestinal tract

F_9 - Overview: Coagulation Factor IX Activity Assay, Plasma

Diagnosing deficiencies, particularly hemophilia B (Christmas disease) Assessing the impact of liver disease on hemostasis Investigation of a prolonged activated partial thromboplastin time

NAU - Overview: Sodium, 24 Hour, Urine

Assessing acid-base balance, water balance, water intoxication, and dehydration

SULFU - Overview: Sulfate, 24 Hour, Urine

Assessing the nutrition intake of animal protein The calculation of urinary supersaturation of various crystals or stones

KETGP - Overview: Ketone Disorders Gene Panel, Varies

Follow up for abnormal biochemical results suggestive of a ketone disorder Establishing a molecular diagnosis for patients with ketone disorders Identifying variants within genes known to be associated with ketone disorders, allowing for...

URCU - Overview: Uric Acid, 24 Hour, Urine

Assessment and management of patients with kidney stones, particularly uric acid stones

MA2EC - Overview: Ma2 Antibody, ELISA, Spinal Fluid

Evaluating patients with suspected paraneoplastic encephalitides using spinal fluid specimens

GQ1ES - Overview: Ganglioside GQ1b Antibody, IgG, ELISA, Serum

Evaluating patients with an underlying demyelinating neuropathy Supporting the diagnosis of a ganglioside GQ1b IgG-related disorder

CLOM - Overview: Clomipramine, Serum

Determining whether a poor therapeutic response is attributable to noncompliance Monitoring serum concentration of clomipramine and norclomipramine to assist in optimizing the administered dose

PACP - Overview: Prostatic Acid Phosphatase, Serum

Aiding in predicting recurrence after radical prostatectomy for clinically localized prostate cancer Following response to androgen ablation therapy, when used in conjunction with prostate-specific antigen

MA2ES - Overview: Ma2 Antibody by ELISA, Serum

Evaluating patients with suspected paraneoplastic encephalitides using serum specimens

UPH24 - Overview: pH, 24 Hour, Urine

Assessment of patients with metabolic acidosis, crystalluria, as well as monitoring the effectiveness of alkalinization or acidification of urine for certain medical conditions (eg, treatment of uric acid nephrolithiasis) using a 24-hour...

MPHNU - Overview: Methylphenidate and Metabolite, Random, Urine

Monitoring urine methylphenidate and ritalinic acid concentrations to assess compliance in patients

CH8B - Overview: Chromogenic Factor VIII Inhibitor Bethesda Titer, Plasma

Detecting the presence and titer of a specific factor inhibitor directed against coagulation factor VIII This test is not useful for detecting the presence of inhibitors directed against other clotting factors and will not detect the...

CALC5 - Overview: Calcium, Random, Urine

Measurement of calcium for the evaluation of calcium oxalate and calcium phosphate kidney stone risk, and calculation of urinary supersaturations Evaluation of bone diseases, including osteoporosis and osteomalacia

VALPF - Overview: Valproic Acid, Free, Serum

Monitoring free valproic acid in therapy Assessing compliance Evaluating potential toxicity

SPIRO - Overview: Spirochete Immunostain, Technical Component Only

This test will identify spirochete organisms in cases of intestinal spirochetosis, as well as cases of syphilis caused by infection with the spirochete Treponema pallidum.

HDCH - Overview: Cholesterol, High-Density Lipoprotein (HDL), Serum

Measurement of serum high-density lipoprotein concentrations for managing atherosclerotic cardiovascular disease risk

CPAPS - Overview: Conventional Smear-Screen, Varies

Screening for cervical carcinoma and a number of infections of the female genital tract including human papillomavirus, herpes, Candida, and Trichomonas

F_10 - Overview: Coagulation Factor X Activity Assay, Plasma

Diagnosing deficiency of coagulation factor X, congenital or acquired Evaluating hemostatic function in liver disease Investigation of prolonged prothrombin time or activated partial thromboplastin time

PTU - Overview: Protein, Total, 24 Hour, Urine

Evaluation of kidney disease using a 24-hour urine collection Screening for monoclonal gammopathy

CPAPD - Overview: Conventional Smear-Diagnostic, Varies

Screening for cervical carcinoma and a number of infections of the female genital tract including human papillomavirus, herpes, Candida, and Trichomonas

PTSC - Overview: Prothrombin Time (PT), Plasma

Screening to identify a deficiency of one or more of the clotting factors of the extrinsic coagulation system (I, II, V, VII, X) due to hereditary deficiency or acquired conditions such as liver disease, vitamin K deficiency, or a specific...

AC1Q - Overview: Anti-C1q Antibodies, IgG, Serum

Evaluating patients with suspected anti-C1q vasculitis Predicting renal involvement in patients with systemic lupus erythematosus Detection of anti-C1q antibodies in serum

BIOTN - Overview: Biotin, Serum

Measurement of biotin in serum Assessment of biotin concentrations in individuals taking biotin supplements Investigation of unexpected results from immunoassays that utilize biotin-streptavidin detection methods This test is not useful...

CLU - Overview: Chloride, 24 Hour, Urine

Indication of fluid balance and acid-base homeostasis using a 24-hour urine collection

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Report’s 29th annual "Best Hospitals Honor Roll" published online on August 14. Mayo Clinic also ranked No. 1 in more specialties than any other hospital in the country....

NELL-1 [Test in Focus] - Insights

D., discusses how Mayo Clinic Laboratories’ new immunohistochemistry test for the detection of NELL-1 antigen, a biomarker for membranous nephropathy found in 10% to 15% of patients, provides diagnostic...

Looking Back on Clinical Chemistry 1 - Insights

in the Mayo Clinic Medical Laboratory Science program, takes a look back on her Clinical Chemistry 1 course....

Detection of (1→3)-𝝱-D-glucan as a Marker of Invasive Fungal Disease - Insights

In this month’s “Hot Topic,” Elitza Theel, Ph.D., will discuss the detection of (1→3)-β-D-glucan (BDG) in serum as a biomarker for the presence of invasive fungal infections....

Orexin-A/Hypocretin-1 for the Diagnosis of Type 1 Narcolepsy [Test in Focus] - Insights

test to perform as well as to interpret. The orexin-A/hypocretin-1 test is a sensitive and specific alternative to the MSLT to diagnose type 1 narcolepsy....