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EXHIBIT 31.01

CERTIFICATION
Pursuant To Section 302 of the Sarbanes-Oxley Act of 2002

I, Dennis B. Gillings, Ph.D., certify that:



| | 1. |  | I have reviewed this annual report, as amended, on Form 10-K/A of
Quintiles Transnational Corp.;                                                                                                                                                                                                                                                 
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|
| | 2. |  | Based on my knowledge, this annual report, as amended, does not
contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading
with respect to the period covered by this annual report, as amended;
|
| | 3. |  | Based on my knowledge, the financial statements, and other
financial information included in this annual report, as amended,
fairly present in all material respects the financial condition,
results of operations and cash flows of the registrant as of, and for,
the periods presented in this annual report, as amended;                    
|
| | 4. |  | The registrants other certifying officers and I are responsible
for establishing and maintaining disclosure controls and procedures (as
defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and
we have:                                                                                                                        
|

| | a. |  | designed such disclosure controls and procedures to
ensure that material information relating to the registrant,
including its consolidated subsidiaries, is made known to us by
others within those entities, particularly during the period in
which this annual report, as amended, is being prepared;
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|
| | b. |  | evaluated the effectiveness of the registrants
disclosure controls and procedures as of a date within 90 days
prior to the filing date of this annual report, as amended (the
Evaluation Date); and                                                                                                   
|
| | c. |  | presented in this annual report, as amended, our
conclusions about the effectiveness of the disclosure controls
and procedures based on our evaluation as of the Evaluation Date;                                                                                                                        
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| | 5. |  | The registrants other certifying officers and I have disclosed,
based on our most recent evaluation, to the registrants auditors and
the audit committee of registrants board of directors (or persons
performing the equivalent function):
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| | a. |  | all significant deficiencies in the design or operation
of internal controls which could adversely affect the
registrants ability to record, process, summarize and report
financial data and have identified for the registrants auditors
any material weaknesses in internal controls; and
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|
| | b. |  | any fraud, whether or not material, that involves
management or other employees who have a significant role in the
registrants internal controls; and                                                                                                                                        

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| | 6. |  | The registrants other certifying officers and I have indicated in
this annual report, as amended, whether or not there were significant
changes in internal controls or in other factors that could
significantly affect internal controls subsequent to the date of our
most recent evaluation, including any corrective actions with regard to
significant deficiencies and material weaknesses.
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| |  | Date: August 26, 2003
| |  | ---------------------

|                          | 
|------------------------- | 
|/s/ Dennis B. Gillings   
|Dennis B. Gillings, Ph.D.
|Chairman                 

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