RA Receptor Antagonist
RA Refractory Anemia
RA Rheumatoid Arthritis
RAA recurrent Amino Acid
RACP Radiation Activated Cytotoxin Prodrug (oncology)
RAEB Refractory Anemia with Excess Blasts
RAFT Reversible Addition Fragmentation chain Transfer
RAGE Receptor for Advanced Glycation End products
RAGE Random Activation of Gene Expression
RAM Ram Access Memory
RANK Receptor Activator of Nuclear factor Kappa B
RANKL Receptor Activator of Nuclear factor Kappa B Ligand
RAP Receptor-Associated Protein
RAPD Random Amplified Polymorphic DNA
RAPID Regulated Accumulation of Protein for Immediate Delivery (Therapeutic protein delivery technique)
RAR Retinoic Acid Receptor
RARS Refractory Anemia with Ringed Sideroblasts
RAS Renin-Angiotensin System
RASP Real-time web APP. Security & Protection
RB Retino Blastoma
RBC Red Blood Cell
RBLI Recovery Boiler Leak Indication
RBS Retained Blood Syndrome
RC Re Combinant
RC Resistance Capacitance
RCC Renal Cell Carcinoma
RCC Reinforced Carbon-Carbon
RCC Red Cell Concentrates
RCM Ring Closing Metathesis
RCP Riboflavin Carrier Protein
RCS Resin Coated Sand
RCT Reverse Cholesterol Transport (See RLT)
RD Respiratory Depression
RDA Required Dosage Amount
RDAF Recombinant Direct Acting Fibrinolytic
RDEB Recessive Dystrophic Epidermolysis Bullosa
RDN Renal De Nervation
RDS Respiratory Distress Syndrome
RE RE Issue (USA Patents)
REACH Registration, Evaluation, Authorization &, CHemical Substances
REMS Risk Evaluation and Mitigation Strategy
REOS Rapid Elimination Of Swill (pharma drug discovery/screening method)
REOVirus Respiratory Enteric Orphan Virus
RESIST. Resistance
RET REarranged during Transfection (Oncology)
RF Radio Frequency
RFA Radio Frequency Ablation
RFB Redox Flow Battery
RFD Refuse Fuel Derived
RFID Radio Frequency IDentification
RFQMR Rotational Field Quantum Magnetic Resonance
RGE Rotavirus Gastro Enteritis
Rha Rhamnose
rHA Recombinant Hem Agglutinin
rHDL Reconstituted High Density Lipoprotein
rhIGF Recombinant Human Insulin-like Growth Factor
rhSOD Recombinant Human Super Oxide Dismutase
RIE Reactive Ion Etch
RIE Right sided Infective Endocarditis
RIGS Radio Immuno Guided Surgery
RIM Reaction Injection Molding
RIME Receptor-Induced Magnetic Enhancement
RIPA Ristocetin Induced Platelet Aggregation
RISC RNA Induced Silencing Complex (RNAI)
RLD Reference Listed Drug
RLS Restless Legs Syndrome
RLT Reverse Lipid Transport
RMB Rapid Melt Beads (Pharma.>Drug Delivery)
RMM Remote Monitoring and Management
RNAI RNA Interference
RNP Ribo Nucleo Protein
RO Reverse Osmosis
ROA Raman Optical Activity
ROM Read Only Memory
ROMP Ring - Opening Metathesis Polymerization
ROP Ring Opening Polymn.
ROP Retinopathy Of Prematurity
ROS Reactive Oxygen Species
RP Retinitis Pigmentosa
RP-HPLC Reversed Phase capillary HPLC (Abbrev.)
rPA Recombinant Protective Antigen (anthrax vaccine)
RPD Rapid Plasma Deposition
RPE Retinal Pigment Epithelium
RPE Referential Preservation Engine (Web-Sites)
RPPA Reverse Phase Protein Array
RRAM Resistive Random Access Memory
RRMS Relapsing-Remitting Multiple Sclerosis
RS ring sideroblasts
RSD Reflex Sympathetic Dystrophy
RSS "Really Simple Syndication" or "Rich Site Summary"
RSV Respiratory Syncytial Virus
RT Retention Time
RT Radio Therapy
RTA Ready To Administer
RTC Rear Toe Control
RTH Resistance to Thyroid Hormone
RTI Reverse Transcriptase Inhibitor
RTI Respiratory Tract Infections
RTM Resin Transfer Molding
RTM Registered Trade Mark
RTM Real Time Monitoring
rtPA Recombinant Tissue Plasminogen Activator (thrombolytic agent)
RTS Radiation Therapy System
RTV Room Temperature Vulcanizable
RU RUssia
RUO Research Use Only
RV Recreational Vehicles
RVI Right Ventricular Involvement
RVO Retinal Vein Occlusion
RWE Real World Evidence
RWH Red Wine Headache
RXR Retinoid X Receptor
RXR ReXinoid Receptor