45 articles
Ocular fluorophotometry
Ocular fluorophotometry, also known as vitreous fluorophotometry, is a technique that measures fluorescein concentration along the eye's axis to quantify blood-retinal barrier permeability and aqueous flow.
Pancreatic function test
A pancreatic function test is a diagnostic procedure assessing exocrine pancreatic function, by direct measurement of stimulated secretion or indirect markers, to detect insufficiency in chronic pancreatitis and cystic fibrosis.
Panel sequencing
Panel sequencing is a targeted next-generation sequencing approach that sequences tens to hundreds of predefined cancer genes, most often in clinical oncology to detect actionable mutations in tumor samples.
Paternity testing
Paternity testing is a genetic test comparing DNA between a child and an alleged father to confirm or exclude paternity, used in legal, personal, and immigration cases.
Placental Function Tests
Placental function tests assess placental health in pregnancy via maternal biochemistry (oestriol, hPL, PlGF), uterine and umbilical artery Doppler, and ultrasound. Cochrane evidence shows biochemical tests alone do not improve pregnancy outcomes; Doppler benefits high-risk pregnancies.
Pooled testing
Pooled testing combines specimens from several people into one diagnostic test, clearing many with a single negative result and saving tests when infection is rare.
Positive occult blood in stool
Positive occult blood in stool: a fecal occult blood test (FOBT, gFOBT, or FIT) has found hidden blood, signaling digestive tract bleeding from hemorrhoids, polyps, ulcers, or colorectal cancer; colonoscopy follow-up is standard.
Prostate specific antigen positive
Prostate specific antigen positive (ICD-11 MA14.1B) is the clinical finding of elevated blood PSA, a prostate-made protein raised by prostate cancer, benign prostatic hyperplasia, prostatitis, or recent procedures; it triggers repeat testing, MRI, and biopsy, not a cancer diagnosis.
Serologic tests
Serologic tests, also called serological tests, are blood-based laboratory tests that detect antibodies or antigens in serum to diagnose infections, check immune status after vaccination, and identify autoimmune disease.
Somatic mutation analysis
Somatic mutation analysis is the sequencing of tumor DNA to identify acquired, non-inherited mutations for cancer diagnosis, prognosis, and targeted therapy selection, typically by paired tumor-normal testing.
Sweat test
The sweat test is a diagnostic procedure that measures chloride concentration in stimulated sweat to diagnose cystic fibrosis; a chloride level of 60 mmol/L or above supports the diagnosis.
Transcription-mediated amplification
Transcription-mediated amplification (TMA) is an isothermal nucleic acid amplification method that uses two enzymes to amplify RNA or DNA targets for pathogen detection and blood screening.
Triple test
The triple test is a second-trimester maternal blood screen measuring AFP, hCG, and estriol to estimate the risk of Down syndrome and neural tube defects.
Urine specimen collection
Urine specimen collection is the clinical procedure of obtaining a urine sample by midstream clean catch, catheterization, or suprapubic aspiration for urinalysis, culture, and other testing.
Vaginal cytology
Vaginal cytology is a diagnostic method that microscopically examines cells from the vagina and cervix to detect malignant cells and assess hormonal status, in humans and animals.