Davis's Lab & Diagnostic Tests
- P450 cytochrome series
- P-5'
- P53
- Pallister-Killian syndrome
- Palpitations, Holter monitor
- Pancreas transplant, C-peptide
- Pancreatic abscesses, computed tomography (CT)
- Pancreatic and prostatic malignancy, cholesterol, total and fractions
- Pancreatic ascites, amylase levels in
- Pancreatic biliary duct variation, cholangiography, percutaneous transhepatic
- Pancreatic deficiency, fecal analysis
- Pancreatic fatty infiltration, hemorrhage, magnetic resonance imaging of
- Pancreatic fibrosis, cholangiopancreatography, endoscopic retrograde
- Pancreatic islet cell tumor, glucose tolerance tests
- Pancreatic pseudocyst, computed tomography (CT)
- Panhypopituitarism, thyroxine, total and free, in
- Paracoccidioides brasiliensis, culture, fungal
- Paraganglioma, catecholamines, blood and urine
- Parainfluenza virus
- Paraspinal cysts, computed tomography (CT)
- Parathyroid hormone-producing tumors, phosphorus, blood and urine, in
- Paroxysmal cold hemoglobinuria, direct antiglobulin testing (DAT)
- Partial pressure of carbon dioxide
- Partial pressure of oxygen
- Partial Thromboplastin Time, Activated
- Parvovirus, viral testing for
- Parvovirus B19 Testing
- Patau syndrome
- Pathogenic organisms
- Patient preparation and specimen collection
- Pauci-immune necrotizing glomerulonephritis, antineutrophil cytoplasmic antibody (P-ANCA, C-ANCA) levels in
- PBC, antiactin antibody (smooth muscle) and antimitochondrial M2 antibody levels in
- PCO 2 (partial pressure of carbon dioxide)
- Peak expiratory flow rate (PEFR)
- Peak inspiratory flow rate (PIFR)
- Pediatric electrocardiogram
- Pediatric intravenous pyelography
- Pelvic adhesions, laparoscopy of
- Pelvic floor sphincter electromyography
- Penicillins
- Pentagastrin (Peptavlon) provocation test
- Pentazocine
- Percutaneous cholecystogram
- Percutaneous needle biopsy
- Percutaneous transhepatic cholangiography (PTC), cholangiopancreatography, endoscopic retrograde
- Pericardial hematoma or effusion, magnetic resonance imaging of
- Perinephric abscess, retrograde ureteropyelography of
- Perinephric inflammation or suppuration, retrograde ureteropyelography of
- Periosteum
- Peritoneal effusion, peritoneal fluid analysis in
- Pertechnetate
- PH
- Pharyngitis, viral testing for
- Phenazopyridine hydrochloride compounds, fecal analysis
- Phencyclidine (PCP), drug screening for
- Phenobarbital, drug monitoring, therapeutic
- Phenotyping
- Phenytoin, drug monitoring, therapeutic
- Phosphate-binding antacids, phosphorus, blood and urine
- Photosensitivity, antinuclear antibody, anti-DNA antibody, anticentromere antibody, antiextractable nuclear antigen antibody, anti-Jo antibody, and antiscleroderma antibody levels in
- Phycomycosis, bronchoscopy
- Phylloquinone
- Physical disabilities, newborn screening for
- Physiological jaundice, bilirubin and bilirubin fractions in
- Pica, potassium, blood and potassium, urine, in
- Pigmented nevi, skin biopsy
- Pill GI endoscopy
- Pilocarpine iontophoresis sweat test
- Pinta, syphilis testing
- Pioglitazone
- Pituitary (central) diabetes insipidus, antidiuretic hormone levels in
- Pituitary function, growth hormone, stimulation and suppression tests
- Pituitary hemorrhage, computed tomography (CT)
- Pituitary microadenoma, magnetic resonance imaging of
- Pituitary surgery, antidiuretic hormone levels
- Pituitary tumors, prolactin levels in
- Placental failure, progesterone levels in
- Placental infarction, antiphospholipid antibodies (aPL): anticardiolipin antibody, IgG, and IgM; anti-beta-2 glycoprotein 1, IgG and IgM; lupus anticoagulant, IgG and IgM levels in
- Placenta previa, ultrasound, biophysical profile (BPP), obstetric
- Plague
- Plaque
- Plasma free fractionated metanephrines
- Plasma HIV RNA
- Plasmapheresis, cholinesterases (CHS)
- Plasma protein level, erythrocyte sedimentation rate
- Plasmas
- Plasma thromboplastin antecedent (PTA)
- Plasma thromboplastin component (PTC)
- Plasma transglutaminase
- Platelet count
- Platelet Count and Tests of Platelet Function
- Platelets, D - dimer
- Platelet transfusions
- Pleurodynia
- Ploidy
- Plummer disease, thyroid scan for
- Pneumococcal pneumonia, complement, total, C3, and C4
- Pneumococcal pneumonia, syphilis testing
- Pneumoconiosis
- PO 2 (partial pressure of oxygen)
- Polio, electromyography
- Polyangiitis, antineutrophil cytoplasmic antibody (P-ANCA, C-ANCA) levels in
- Polyarteritis nodosa, rheumatoid factor in
- Polyclonal gammopathies, protein, blood, total and fractions and protein, urine in
- Polyendocrine autoimmune syndromes, insulin antibodies in
- Poor metabolizer (PM)
- Porphobilinogen
- Porphyria cutanea tarda, porphyrins, blood and urine, in
- Porphyrin synthesis, delta-aminolevulinic acid
- Porphyromonas spp., gram stains
- Portal hypertension, liver and spleen scan for
- Positron Emission Tomography, Various Sites (Brain, Heart, Pelvis)
- Postanesthesia period, ketones, blood and urine in
- Post–blood transfusion period
- Post–cardiac vascular surgery, direct antiglobulin testing (DAT)
- Postdialysis period, calcium, blood, total and ionized
- Post-fibrinolytic therapy, fibrinogen degradation products
- Post–gastric surgery period, gastric emptying scan
- Posthemorrhagic anemia, platelet count and tests of platelet function in
- Posthemorrhagic hematopoiesis, bone marrow biopsy in
- Posthepatic jaundice, bilirubin and bilirubin fractions in
- Post-membranoproliferative glomerulonephritis, complement, total, C3, and C4
- Post-myocardial infarction syndrome, pericardial fluid analysis in
- Postoperative ileus, gastric emptying scan
- Postprandial glucose
- Poststreptococcal infection, complement, total, C3, and C4
- Post–surgical period, fibrinogen degradation products
- Postthymectomy
- Post-transfusion purpura, platelet antibodies in
- Postvasectomy period, semen analysis
- Potassium, Blood and Potassium, Urine
- Potassium, metabolic alkalosis in depletion of
- Potassium excess, phosphorus, blood and urine, in
- Prader-Willi syndrome
- Prealbumin
- Precision medicine
- Precocious puberty in children, follicle-stimulating hormone
- Prediabetes, hemoglobin A 1c
- Pregnancy test
- Prehepatic (hemolytic) jaundice, bilirubin and bilirubin fractions in
- Prehepatic jaundice, bilirubin and bilirubin fractions in
- Premature birth, bilirubin and bilirubin fractions in
- Premature labor, fetal fibronectin
- Premature ventricular contractions, Holter monitor
- Prerenal azotemia, sodium, blood and sodium, urine, in
- Preview
- Primary and metastatic tumors, computed tomography (CT)
- Primary angle-closure glaucoma
- Primary fibrinolysis
- Primary gonadal dysfunction, luteinizing hormone levels in
- Primary hereditary hyperoxaluria, oxalate, urine, in
- Primary lung cancer, AChR levels in
- Primary lymphoma of bone, alkaline phosphatase and isoenzymes levels in
- Primary myelofibrosis (PMF)
- Primary polycythemia, erythropoietin
- Primary polydipsia, osmolality, blood and urine, in
- Primary pulmonary hypertension, B-type natriuretic peptide and pro-B-type natriuretic peptide
- Primidone, drug monitoring, therapeutic
- Prion Disease Testing
- Proaccelerin
- Pro-B-Type Natriuretic Peptide
- Procainamide, drug monitoring, therapeutic
- Procalcitonin
- Procalcitonin (PCT)
- Proconvertin
- Proctitis, colonoscopy
- Progesterone
- Progesterone receptor assay
- Progestogens
- Proinsulin C-peptide
- Prolactin
- Proliferating cell nuclear antigen (PCNA)
- Prostate-Specific Antigen
- Prostatic hyperplasia, cystoscopy
- Prostatic infarct, prostate-specific antigen in
- Prostatography
- Prosthetic joints
- Prosthetic valves, hemoglobin and hematocrit
- Proteasecleaved protein (P protein)
- Protein, cerebrospinal fluid analysis
- Protein C and Protein S
- Protein intake, creatinine, blood and estimated glomerular filtration rate (eGFR)
- Protein malnutrition (kwashiorkor), iron studies
- Prothrombin Time and International Normalized Ratio
- Proton pump inhibitors
- Protriptyline, drug monitoring, therapeutic
- Proximal duodenum, capsule endoscopy
- Proximal tubular defects, phosphorus, blood and urine, in
- Pseudoaneurysm, ultrasound, arterial Doppler, lower and upper extremity studies of
- Pseudomyxoma peritonei, magnetic resonance imaging of
- Pseudopregnancy, maternal markers for
- Psittacosis, syphilis testing
- Psychogenic polydipsia, antidiuretic hormone levels in
- Psychosis, dehydroepiandrosterone sulfate
- Psychotic disorder
- PTC
- PTHC
- PTH-producing tumors, calcium, blood, total and ionized
- Ptosis of eyelid
- Puberty, follicle-stimulating hormone
- Pulmonary angiography
- Pulmonary artery abnormalities, cardiac catheterization
- Pulmonary artery pressure (PAP), cardiac catheterization
- Pulmonary aspiration, gastroesophageal reflux scan
- Pulmonary atresia, magnetic resonance imaging of
- Pulmonary capillary wedge pressure (PCWP), cardiac catheterization
- Pulmonary sequestration, angiography, various sites
- Pulmonary tumors, pulmonary function studies of
- Pulse Oximetry
- Pupil dilation, fundoscopy with or without photography
- Purified protein derivative (PPD)
- Purine metabolism disorders/purine intake
- Purkinje fibers
- PVD, cardiac catheterization
- Pyloric obstruction, gastrin and gastrin stimulation test
- Pyocele, ultrasound of
- Pyridoxal phosphate deficiency, alanine aminotransferase levels in
- Pyridoxine
- Pyridoxine deficiency, oxalate, urine, in
- Pyridoxyl-5-phosphate
- Pyrophosphate (PyP)
- Pyroxidine