Category: Rx Lab Test (A – Z)

Kleihauer-Betke stain; Flow cytometry – fetal-maternal erythrocyte distribution; Rh incompatibility – erythrocyte distribution The fetal-maternal erythrocyte distribution test is used to measure the number...

Biopsy – brush – urinary tract; Retrograde ureteral brush biopsy cytology; Cytology – ureteral retrograde brush biopsy A ureteral retrograde brush biopsy is a surgical...

Cystography – retrograde; Cystogram Retrograde cystography is a detailed x-ray of the bladder. Contrast dye is placed into the bladder through the urethra. The urethra is...

Retinal photography; Eye angiography; Retinopathy – fluorescein Fluorescein angiography is an eye test that uses a special dye and camera to look at blood...

Retinol test The vitamin A test measures the level of vitamin A in the blood. The vitamin A test measures the level of vitamin A...

Retinal photography; Eye angiography; Retinopathy – fluorescein Fluorescein angiography is an eye test that uses a special dye and camera to look at blood...

Anemia – reticulocyte Reticulocytes are slightly immature red blood cells. A reticulocyte count is a blood test that measures the amount of these cells...

Respiratory syncytial virus antibody test; RSV serology A respiratory syncytial virus (RSV) antibody test is a blood test that measures the levels of antibodies (immunoglobulins)...

Respiratory inductance plethysmography; Penile pulse volume recording; Pulse volume recordings; Segmental pulse volume recordings Plethysmography is used to measure changes in volume in different...

Arterial blood gas analysis; ABG; Hypoxia – ABG; Respiratory failure – ABG Blood gases are a measurement of how much oxygen and carbon dioxide are in...

Resin T3 uptake; T3 resin uptake; Thyroid hormone-binding ratio The T3RU test measures the level of proteins that carry thyroid hormones in the blood....

Renogram; Kidney scan A renal scan is a nuclear medicine exam in which a small amount of radioactive material (radioisotope) is used to measure the function...

Plasma renin activity; Random plasma renin; PRA The renin test measures the level of renin in blood. Plasma renin activity; Random plasma renin; PRA....

Renal vein thrombosis – venogram A renal venogram is a test to look at the veins in the kidney. It uses x-rays and a special dye...

Venogram – renal; Venography; Venogram – kidney; Renal vein thrombosis – venogram A renal venogram is a test to look at the veins in...

Casts in the urine; Fatty casts; Red blood cell casts; White blood cell casts Urinary casts are tiny tube-shaped particles that can be found...

Radionuclide renal perfusion scan; Perfusion scintiscan – renal; Scintiscan – renal perfusion A renal perfusion scintiscan is a nuclear medicine test. It uses a...

Renal biopsy; Biopsy – kidney A kidney biopsy is the removal of a small piece of kidney tissue for examination. Renal biopsy is a...

CT angiography – abdomen and pelvis Computed tomography angiography – abdomen and pelvis; CTA – abdomen and pelvis; Renal artery – CTA; Aortic – CTA;...

Renal artery stenosis – arteriography Renal arteriography is a special x-ray of the blood vessels of the kidneys. The gold standard for diagnosis of...