Kit Symbols
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Reference Number | Lot Number | In Vitro Diagnostic | Intended Use |
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Sigma (“N” tests) | Instructions | Expiration Date | Storage Temperature |
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CE Mark | Caution | Caution | Manufacturer |
How long has Diapharma been in business?

DiaPharma’s original logo
Diapharma has been in business since 1997. Diapharma’s president and other staffers worked with the Chromogenix product line several years prior to 1997. Read more about us here.
Can I hold my order at Diapharma?
Orders for 10 or more items or $10,000 or more in value can be held by signing a “sequester agreement” with Diapharma. This agreement must be signed for us to hold your items. The agreement states you must follow with a purchase order within 30 days, and that you must take all items purchased either per a pre-arranged schedule or 90 days prior the expiration date of the products. No returns or cancellations possible. If a purchase order does not follow within 30 days, Diapharma will return your items to general available inventory.
How are Diapharma products stored?
Diapharma stores it’s products on site in industrial coolers, a refrigerated walk-in cooler, a scientific freezer for frozen items, a temperature and humidity room for items sensitive to those factors and industrial shelves for regular room temperature and dry items. Our system is temperature-monitored with an alarm system and includes a back-up generator in the event of a power failure…
How can I get technical support from Diapharma?
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Bill Bergman, Technical Support |
Mike Hambleton, Technical Director of Operations |
Elizabeth Lindeman, Technical Support |
Phone
Diapharma’s technical support line: 1-800-447-3846.
Email info@diapharma.com and your email will immediately be passed on to Diapharma’s tech team.
FAQ
Check our product FAQ pages.
Directions to Diapharma?
Address
Diapharma Group, Inc.
8948 Beckett Road
West Chester, OH 45069
West Chester is a township within Butler county in Southwestern Ohio. It is approximately 30 minutes north of the city of Cincinnati, 40 minutes south of Dayton and 1.5 hrs south of Columbus.
Click here for directions.
Holiday Hours
Diapharma’s regular business hours:
- Monday through Thursday, 8am to 5pm Eastern Standard Time with limited phone support available until 8pm
- Friday, 8am to 1pm Eastern Standard Time with limited phone support available until 5pm
Diapharma’s “summer hours”:
- Monday through Thursday, 8am to 5pm Eastern Standard Time with limited phone support available until 8pm
- Friday, off, June, July and August
Diapharma’s 2016 Holiday Schedule:
JANUARY
- New Year’s Day, Friday, January 1, 2016
- Martin Luther King Day, Monday, January 18, 2016
FEBRUARY
- Presidents Day, Monday, February 15, 2016
MARCH
- Good Friday, Friday, March 25, 2016
- Easter, Monday, March 28, 2016
APRIL
- N/A
MAY
- Memorial Day, Friday, May 27, 2016
- Memorial Day, Monday, May 30, 2016
JUNE
- N/A
JULY
- Independence Day, Monday, July 4, 2016
AUGUST
- N/A
SEPTEMBER
- Labor Day, Monday, September 5, 2016
OCTOBER
- Columbus Day, Monday, October 10, 2016
NOVEMBER
- Thanksgiving, Wednesday, November 23, 2016
- Thanksgiving, Thursday, November 24, 2016
- Thanksgiving, Friday, November 25, 2016
DECEMBER
- Christmas, Monday, December 26, 2016
- Christmas, Tuesday, December 27, 2016
- Christmas, Wednesday, December 28, 2016
- Christmas, Thursday, December 29, 2016
- Christmas / New Year’s Eve, Friday, December 30, 2016
Do you have applications for the DiaPharma Factor X kit on automated coagulation analyzers?
Yes, we have applications for the ACL Advance, AMAX, BCS, STA, STA Compact, STA-R, and SysmexCA 1500, as well as for microplates. Our applications library is growing, so please check with DiaPharma for the latest updates.
What is the utility of the DiaPharma Factor X kit? Am I expected to use this on ALL my Coumadin patients?
No, only for those where the INR is unreliable and unstable. For example, it is useful in patients with lupus anticoagulant where the LA falsely prolongs the PT, therefore giving unreliable INRs. Also, Argatroban has been shown to prolong the PT, so patients being bridged from Argatroban to warfarin can be monitored using the DiaPharma Factor X kit.
What is the DiaPharma Factor X kit?
The DiaPharma Factor X Kit is an in vitro diagnostic test kit for the quantitative determination of Factor X activity in human citrated plasma. Factor X activity is useful for monitoring patients on oral anticoagulant therapy (warfarin) where baseline INR values are prolonged and INR results are not reliable, such as in OAC patients with lupus inhibitors. The DiaPharma Factor X Kit is also useful for screening for factor X deficiencies.
If I want to determine FX in plasma, but do not want to buy a kit, what other options are there?
S-2337™ was previously included in the now discontinued Chromogenix Coatest® FX kit, so another substrate must be employed. S-2765™, which is also a substrate for FXa, can therefore be used, and a method based on the activation of FX in the presence of calcium using Russell’s Viper Venom (RVV) as the activator is described in the Chromogenix catalog. DiaPharma has composed a new DiaPharma Factor X kit based on S-2765™.
What is the 53 nkat vial of thrombin equivalent to in NIH units?
Based on an assay with S-2238™, for bovine thrombin, 1 NIH-U = 1.15 IU = 3.4 nkat. The DiaPharma bovine thrombin, 53 nkat (S-2238™) is equivalent to approximately 21 NIH-U or 25 IU.
What are my shipping options?

Matt Smith, Shipping & Receiving
Diapharma ships Monday through Thursday. We must receive your order by 3pm EST if you wish to receive your in-stock items by the next business day. We do not ship on Friday, except for a Saturday delivery.
Please note our summer business hours:
Monday-Thursday: 8am-5pm EST
Closed on Fridays in June, July and August.
Orders to the US
Our primary domestic carrier is UPS. We can ship your order via FedEx if you list your FedEx account number on your purchase order. To ensure stability, we ship all refrigerated products next day air. If you have special shipping requirements, please include these on your purchase order. Larger shipments such as instrumentation or those on pallets may ship via a freight service.
Orders to Canada
We ship orders to Canada via FedEx using the International Priority service. We use FedEx as the customs broker by default. If you prefer to use your own customs broker, please indicate this on your purchase order.
Rest of the World
Diapharma can only deliver orders to the US and Canada.
What are my payment options?

Misty Feigh, Accounting
Billing terms are Net 30 days. We will mail your bill only after your item(s) ship, usually the same day. Shipping charges are pre-paid and added to your invoice unless you have an account number with a shipper. Payment is accepted in USD (US Dollars $) only.
Diapharma accepts Visa, MasterCard and American Express.
If you are mailing your payment, please send to:
DIAPHARMA GROUP INC
DEPT 781293
PO BOX 78000
DETROIT, MI 48278
How do I order?

Amy Quinlisk, Customer Service
You can order online, by phone, fax, or email:
- online at www.diapharma.com (24 hours / day)
- phone at 1-800-526-5224 (Monday – Thursday 8 am – 5 pm and Friday 8 am – 1 pm, Eastern Standard Time)
- fax at 513-860-9635 (24 hours / day)
- e-mail at info@diapharma.com (24 hours / day)
Please include on your order:
- purchase order number
- company or institution name
- ship to address
- bill to address
- catalog number and/or full product name
- quantity
- any other pertinent information
We must receive your order by 3 pm EST if you wish to receive your in-stock items by the next business day. We do not ship on Friday, except for a Saturday delivery. First time customers must provide a credit card for payment unless credit is approved in advance. Please fax or e-mail credit references with order if you wish to apply for credit.
DiaPharma can only deliver orders to North America (US and Canada).
Do you ship internationally?
DiaPharma can only ship orders to the US and Canada.
Canada
DiaPharma uses FedEx to ship all orders from the US to Canada. Due to customs clearance concerns, we typically ship to Canada on Monday, Tuesday and Wednesday.
Please provide your FedEx account number so that all freight and customs duties can be invoiced to you by FedEx directly. If you prefer a broker other than FedEx to clear your imports, please include the broker’s complete information (including name, address, phone, fax) on your purchase order.
All Other Countries
Please see our manufacturers’ web sites for a list of international distributors.
Where is Diapharma located?
DiaPharma’s home office is located at:
DiaPharma Group, Inc.
8948 Beckett Road
West Chester, OH 45069
USA
West Chester is approximately 30 minutes north of Cincinnati, Ohio. We are located in the West Chester Business Center on Beckett Road in between West Chester Road and Union Centre Blvd. Our main entrance is at the very end of Building #2. Please note there are even numbered addresses on both sides of Beckett Road.