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Test Details Synonyms Thyroid Hormone-binding Ratio (THBR). Use Thyroid function test for the diagnosis of hypothyroidism or hyperthyroidism, used with thyroxine (T4) or equivalent to provide free T4 index, FTI. An indirect measure of binding protein, the T3 uptake reflects available binding

Test Details Synonyms Culture, Stool, Comprehensive Enteric Pathogens Culture, Routine Feces Culture, Routine Routine Culture, Stool Test Includes Culture; isolation and identification (at an additional charge) of Salmonella, Shigella, and Campylobacter, and detection of enterohemorrhagic E coli

Test Details Use Electrolyte, acid-base balance; water balance; water intoxication; diagnose dehydration. Hypernatremia occurs in dehydration. For instance, nasogastric protein feeding with insufficient fluids may cause hypernatremia. Hypernatremia without obvious cause may relate to Cushing syndrome,

Test Details Synonyms Erythrocyte Sedimentation Rate ESR Westergren Sedimentation Rate Use Evaluate the nonspecific activity of infections, inflammatory states, autoimmune disorders, and plasma cell dycrasias.

Test Details Synonyms Measles Antibodies Use Determine status or, with paired sera, aid in the diagnosis of recent infection. Additional Information Measles (rubeola) is caused by a paramyxovirus, and despite vaccination programs has had several recent local epidemics. Revaccination appears

Test Details Synonyms RA Latex, Turbidimetry RF Titer Rheumatoid Factor (RF) Use Help in the differential diagnosis and prognosis of arthritic disorders. Additional Information Rheumatoid factors are antibodies directed against the Fc fragment of IgG. These are usually IgM antibodies, but

Test Includes Reticulocytes are expressed as a percentage in a total of 1000 RBCs. Use Evaluate erythropoietic activity which is increased in acute and chronic hemorrhage, and hemolytic anemias; evaluate erythropoietic response to antianemic therapy. Additional Information Reticulocytes

Test Details Synonyms Interferon-gamma Release Assay (IGRA) for Mycobacterium tuberculosis Use The QuantiFERON®-TB Gold test is an in vitro assay to aid in the diagnosis of both latent and active infection with Mycobacterium tuberculosis.

Test Details Synonyms Activated Partial Thromboplastin Time (aPTT). Use The aPTT is sensitive to deficiency or inhibition of factors in the intrinsic pathway. These include the contact factors; high molecular weight kininogen (HMWK), prekallikrein, and factor XII along with procoagulant factors

Test Details Synonyms PTH Whole Molecule Use Diagnosis of parathyroid disease and other diseases of calcium homeostasis; monitoring patients undergoing renal dialysis. Additional Information PTH is an 84-amino-acid peptide hormone which is responsible for the regulation of serum calcium levels

Test Details Synonyms Activated Partial Thromboplastin Time (aPTT) and Prothrombin Time (PT) PT and aPTT PT and PTT Test Includes Activated partial thromboplastin time (aPTT); international normalized ratio (INR); prothrombin time (PT)

Test Details Synonyms Prothrombin Time Assay Protime PT Test Includes International normalized ratio (INR); prothrombin time. Use Evaluation of the extrinsic coagulation system; aid in screening for congenital and acquired deficiencies of factors II, V, VII, X, and fibrinogen.6-8 This test