Davis's Lab & Diagnostic Tests
- Rabies, viral testing for
- Radial arterial puncture
- Radioactive Iodine Uptake
- Radiofrequency and Microwave Ablation, Liver
- Radiographic absorptiometry (RA)
- Radiography, bone
- Rapid strep screen
- Reactive arthritis, human leukocyte antigen B27
- Reality technologies
- Rectal electromyography
- Rectal prolapse, sigmoidoscopy for
- Recurrent fetal loss, antiphospholipid antibodies (aPL): anticardiolipin antibody, IgG, and IgM; anti-beta-2 glycoprotein 1, IgG and IgM; lupus anticoagulant, IgG and IgM levels in
- Recurrent venous and arterial thromboses, antiphospholipid antibodies (aPL): anticardiolipin antibody, IgG, and IgM; anti-beta-2 glycoprotein 1, IgG and IgM; lupus anticoagulant, IgG and IgM levels in
- Reflux disease, upper gastrointestinal and small bowel series and
- Reiter syndrome, human leukocyte antigen B27
- Renogram
- ReSET app
- Respiration, intraocular pressure (IOP)
- Respiratory syncytial virus (RSV)
- Retained antrum, gastrin and gastrin stimulation test
- Reticulocytes in bone marrow
- Retinal edema, fluorescein angiography
- Retinal exudates or hemorrhage
- Retinal occlusion of the artery or vein
- Retinal vascular occlusion, fluorescein angiography
- Retrograde Ureteropyelography
- Retroviral therapy, CD4/CD8 enumeration and viral load testing
- Rett syndrome
- Reverse grouping, blood
- Rh(D) immune globulin
- RhD alloimmunization
- RhD-negative
- RhD-positive RBCs
- Rheumatic arthritis, complement, total, C3, and C4
- Rheumatic disease, complement, total, C3, and C4
- Rheumatoid Factor
- Rh genotyping
- Rh immune globulin, fetomaternal bleed determination
- Rh typing
- Rickettsial disease, syphilis testing and
- Right atrial pressure (RAP), cardiac catheterization
- Riley-Day syndrome, homovanillic acid and vanillylmandelic acid
- Rinne test
- Rocky Mountain spotted fever, platelet count and tests of platelet function in
- Rosette screen, fetomaternal bleed determination
- Rosette test (qualitative screening)
- Rotator cuff tears, magnetic resonance imaging of
- Rotavirus gastroenteritis (RGE)
- Routine blood pressure, cardiac catheterization