""Hello, my name is Dr. Leslie Tharenos and I am the Principal Investigator at the Synexus - St. Louis location. Thank you for taking the time to visit our website. I invite you to read more about our site below and I look forward to welcoming you here in the near future" "

Synexus is a company dedicated to conducting clinical studies and have been investigating the effectiveness of new medicines and treatments for more than 20 years. We provide a friendly, relaxed environment where you have the chance to help shape the future of health for yourself and for others.

Synexus – St. Louis is a dedicated research site that has been conducting Clinical Trials since 1996. Dr. Leslie Tharenos has been conducting research with our company since 2012 and is board certified in Occupational/Preventive Medicine with an experienced staff of Clinical Research Coordinators and Patient Recruitment Specialist. We are centrally located in one of St. Louis’ main medical districts just southeast of the Highway 270 and Olive Blvd. intersection.

Clinic Information

Contact Details

675 Old Ballas Rd., Suite 200
St. Louis

63141 Missouri

Studies at this clinic

Healthy Volunteers

Respiratory Syncytial Virus (RSV) Vaccine

View Study

Hypertriglyceridemia

Type 2 diabetes and high triglycerides at risk for cardiovascular events

View Study

Hypogonadism

Low testosterone

View Study

Migraine

Episodic Migraines

View Study

Diabetes

Diabetic Gastroparesis

View Study

▶ Alabama

▶ Arizona

▶ California

▶ Colorado

▶ Florida

▶ Georgia

▶ Illinois

▶ Indiana

▶ Kentucky

▶ Minnesota

▶ Missouri

▶ Nebraska

▶ Nevada

▶ New Jersey

▶ New York

▶ Ohio

▶ Oklahoma

▶ South Carolina

▶ Texas

▶ Utah

Our clinics in Alabama

1 832 Princeton Avenue SW, Birmingham

Our clinics in Arizona

1 2310 East Brown Rd, Mesa

2 3638 E. Southern Ave. Suite 103C, Mesa

3 6290 E Grant Rd, Tucson

4 16838 E. Palisades Blvd, Bldg. C, Suites 152(c) and 153(r) Fountain Hills

5 2081 W. Frye Rd, Suite 208 Chandler

6 2155 W Orange Grove Rd Tucson

7 20100 N 51st Avenue, Suite F630 Glendale

8 1455 W Chandler Blvd Bldg A, Suite 1, Chandler

9 5750 W Thunderbird Rd Suite G790, Glendale

10 7600 North 15th Street Suite 191, Phoenix

11 26224 N Tatum Blvd Suite 15-A, Phoenix

12 4350 E Camelback Rd Suite F150, Phoenix

Our clinics in California

1 11080 E Artesia Blvd, Suite A Cerritos

2 2562 State Street, Suite D Carlsbad

3 145 Thunder Drive Vista

4 4720 Hoen Avenue Santa Rosa

Our clinics in Colorado

1 8340 S. Sangre de Cristo Rd, Suite 105 Littleton

2 13111 E Briarwood Ave Suite 310, Centennial

3 2960 N Circle Drive, Suite 115 Colorado Springs

Our clinics in Florida

1 6010 Park Blvd Pinellas Park

Our clinics in Georgia

1 6065 Roswell Road, Suite 820 Atlanta

Our clinics in Illinois

1 33 North Dearborn, Suite 500 Chicago

Our clinics in Indiana

1 958C S. Kenmore Drive, Evansville

Our clinics in Kentucky

1 2101 Nicholasville Rd., Suite 106 Lexington

Our clinics in Minnesota

1 6601 Lyndale Ave S, Richfield

Our clinics in Missouri

1 675 Old Ballas Rd., Suite 200 St. Louis

Our clinics in Nebraska

1 1502 S. Washington St, Suite 201 Papillion

2 1908 North 203rd Street, Suite 2 Elkhorn

3 11020 Prairie Brook Road Omaha, NE

Our clinics in Nevada

1 861 Coronado Center Drive, Suite 220 Henderson,

2 2629 W Horizon Ridge Pkwy, 130(r) & 140(c) Henderson

Our clinics in New Jersey

1 201 Laurel Heights Drive Bridgeton

Our clinics in New York

1 80-15 164th Street, 1st Floor Jamaica

Our clinics in Ohio

1 1275 Olentangy River Rd, Suite 202 Columbus

2 8250 Kenwood Crossing Way Suite 100, Cincinnati

3 530 South Main Street, Suite 1712 Akron

Our clinics in Oklahoma

1 1712 Northeast 23rd St Oklahoma City

Our clinics in South Carolina

1 2000 E Greenville Street, Suite 1500 (r) & 1600 (c), Anderson

2 1657 E Greenville Street Anderson

3 501 Memorial Drive Extension, Suite A Greer

Our clinics in Texas