HDCN (Hypertension, Dialysis and Clinical Nephrology) is a subscription-based information service that offers readers a selection of recent articles, abstracts, and lectures in the field of nephrology and hypertension that are of special clinical importance and interest. Content on HDCN is divided into a FREE ZONE and a KEY ZONE.
The FREE ZONE content is limited to archived lectures from symposia where a sponsor has defrayed the cost of posting and maintaining the content. Registration is free, and the user chooses his or her own username and password.

The KEY ZONE contains content from various meetings, including the Renal Research Institute's Advances in CKD, the Brigham Nephrology Board Review Course, the American Society for Diagnostic and Interventional Nephrology, and the American Society for Hypertension. Also, the key zone gives access to a monthly list of links to selected articles which have been chosen by our editorial board as being of particular importance, as well as to a monthly selection of abstracts from the American Society of Nephrology Kidney Week.

You may choose either subscription level when filling out this form. If you have selected a KEY ZONE subscription, you will be taken to a payment form. A personal subscription to the KEY zone for 1 year costs $95.00. A 2-month access period can be purchased for $45.00, and a 2-week access for $20.00. After a paid subscription expires, a KEY ZONE username and password revert to FREE ZONE access only. Group subscriptions are available for an annual cost of $495.00.

HDCN is published by Medtext, Inc., 15W560 89th Street, Willowbrook, IL USA 60527. Contact email is editor -at- Customer service is available from 9 AM to 5 PM during U.S. Central Standard Time, Mondays through Fridays.

After completing the subscription form and paying by credit card or by electronic check, access to the relevant files on HDCN is available within 24 hours.
  • Note: Users with an existing login should NOT use this form to upgrade or renew. Please go to the existing user form.
  • Free Zone Directories:
    • Opened by logins with either free zone or key zone privileges
    • Access to weekly article abstracts
    • Access to sponsored symposia
    • Popup box asks you to enter your Username (LoginID) and Password for the FREE ZONE of HDCN.
    • All FREE ZONE users receive a weekly email update describing what's new on HDCN.
  • Key Zone Directories:
    • Opened by logins with key zone privileges only.
    • Slide/audio from ASH, RRI, Brigham Board Review Courses, ASDIN, and other meetings that were not supported by industry
    • Abstracts from ASN
    • Featured, full-text articles from Seminars in Dialysis and Hemodialysis International and other, participating publishers (usually 2-4 articles per month).
    • Access to various search indexes on HDCN
    • Popup box will ask you for your Username (LoginID) and Password for the FREE or KEY ZONE of HDCN.
Whereas HDCN is targeted to physicians, and especially nephrologists, other medical professionals are welcome to register. Patient registration is discouraged, because the material on HDCN is aimed at a professional level. However, patient registration is not forbidden.

Instructions on filling out this form

Please fill out the material truthfully. The name you enter here will be the name that goes on any CME/CNE certificate. Your address or phone number will not be sold nor given out to any other party. Your email address will be used to send you a weekly update of new material on HDCN (the information service is updated every month or sometimes every 2 weeks). Filling out this form entails no financial obligation. After you complete the form and agree to the disclaimer, you will be a registered user of HDCN with access to material in FREE ZONE directories, and also, if you choose to obtain a paid subscription, to KEY ZONE directories.

If you have any queries concerning your registration, please contact us by email (editor at or by phone at tel: 1-630-325-3276 (during normal business hours U.S. Central time).

Please do NOT try to use this form to get a KEY ZONE subscription if you are already registered for the FREE ZONE. The program will tell you that you are already registered and won't let you proceed. If you have a FREE ZONE registration, please UPGRADE by going to THIS LINK.
First Name :
Last Name :
Middle Initials :
Degree :
    (If "Other")
What's your professional area ?
Your email address :
ASN Number (if any) :
Preferred E-mail format :
  HTML (Rich Text): Plain-text:
Your postal address :
City :
State :
Zip :
Country :
Telephone :
Key Zone Group code (if any) :
In the boxes below, please choose and then enter a login (user name) and password. DON'T use the password to your computer account, your bank, or your checking account here, for internet security reasons. The loginID and password are case sensitive. This means that capital letters are important: If you choose a username of CaitLin, then caitlin will not work.
Enter a Login (User Name) :
Enter password (Case sensitive) :
Re-enter password (Case sensitive) :

To complete your registration, read the PRIVACY POLICY and DISCLAIMER and, if you agree, press "I AGREE". This submits your registration.

Warning, disclaimer, privacy policy, and paid subscription return policy
Please read and click "CLICK HERE TO ACCEPT" to complete your registration

HDCN Privacy policy:
HDCN does not disclose any individual information pertaining to its registered users or paid subscribers to anyone. Aggregate use data are given to potential supporters of educational symposia as well as to potential advertisers. When an HDCN user takes an evaluation or other quiz, individual quiz results are not disclosed to any third party. In fact, individual quiz data are not collected unless specified on a particular quiz. Login IDs are sometimes requested on quizzes and polls to restrict counting of results from desired subgroups of HDCN users such as physicians, nurses, or dialysis technicians.

The information at this server is provided with the understanding that the publisher, authors, and advisors are not rendering medical or professional services. Medicine is a rapidly changing area, and efforts have been made to provide information that is medically correct at the time of initial posting. However, there may be mistakes, both typographical and in content, and subsequent findings may invalidate what is posted on this site. In portions of this site, comments are made by persons identified as physicians. No attempt has been made to verify the medical credentials of persons contributing to discussions or talks. Typographical errors are common in slides, and one should not rely on drug dosages listed either in the slides, transcripts, or posted abstracts without first verifying them from manufacturer-supplied product information.

The material provided should be used only as a general guide and not the ultimate source of information and should not be used to make personal or professional decisions. The authors, advisors, and publisher shall have neither liability not responsibility to any person or entity with respect to any loss or damage alleged to be caused directly or indirectly by the information presented on this server.

Paid subscription return policy:
If you are not satisfied for any reason with your paid subscription to HDCN, please send an email to editor -at- or call HDCN at 630-325-3276 to request a full refund. Requests for a refund must be made within 30 days of payment.
(Press this bar to complete your registration)
Press this only if you agree with the above