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Abbott Clinical Research

About Clinical Research

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What is Clinical Research?

 

Before any new prescription drug reaches the market, the drug must first undergo dozens of successful Clinical Research Studies to prove it's safety, tolerability and effectiveness.  Long before any human will test a drug, rats and other animals are used extensively to assess the drug.  Once the drug studies in animals are completed, the long process of Human Clinical Research Studies will begin.  On average, only 1 in every 10 drugs that start human research trials will ever reach the consumer market.  Also, bringing a new drug to market does not happen overnight.  From concept to approval by the FDA to your medicine cabinet may take 7 to 10 years at a cost of several hundred million dollars or more. 

Below is a typical life cycle of a Clinical Research Study.  This is not to be viewed as the way all studies are done, but just as an example.

 

Wikipedia

Phase I

Phase IIa

Phase IIb

Phase III

Phase IV

Type of Subjects:

Normal Healthy

Patients

Patients

Patients

Patients

Number Tested:

20 - 100

25 - 75

50 - 200

300 +

1,000 +

Measures Assessed:

Safety

Side Effects

Maximum Dosage

Effectiveness

Dose Range

Safety

Effectiveness

Safety

Effectiveness

Safety

Effectiveness

Safety

Other Uses

Value of Study:

Kinetics

Dynamics

Proof of Concept

Confirm mechanism of action

Confirm Effectiveness

Market Expansion for new uses

Where:

In house

(controlled)

In house

(controlled)

Out Patient

(Ambulatory)

Out Patient

(Ambulatory)

Out Patient

(Ambulatory)

Time Frame:

1 - 1.5 years

1 year

1 - 1.5 years

3 - 6 years

1 - 2 years

 

After each study, the drug must be cleared by the FDA to continue to the next step.  Between Phase III and IV, there is typically a 1 to 2 years delay for FDA approval.  The drug will typically be marketed once this approval is granted and Phase IV is used for assessing long term effects and for finding additional uses for the drug.  

 

People who participate in Phase I studies are generally healthy, normal people who do not have the disease or condition that the drug is being developed to treat.  The purpose of Phase I studies is to determine how long it takes the medication to enter and leave the body.  At this time, side effects are recorded and the maximum dosage amounts are determined.  This is also known as Pharmakinetics (PK).  Many drug companies are also studying genotyping, understanding why a particular drug affects different people in different ways.  Again, with Phase I, the volunteers are not seeing if the drug works, just how it passes through and affects the body.

 

Part 1 - What Is Clinical Research?

Part 2 - Different Types of Studies

Part 3 - The Role of Clinical Research Facilities

Part 4 - The Role of Healthy Volunteers

Part 5 - The Role of Patient Volunteers

Part 6 - The Typical Volunteer

 

 

 

 

Abbott Clinical Research

 

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