Custom Gene Expression Arrays may be ordered and run through the GRCF

Applied Biosystems by ThermoFisher’s OpenArray chips are ideal for investigators who wish to look at multiple assays on medium to large numbers of samples.

Understanding the OpenArray

The technology spots Taqman assays onto chips, which are then run in our QuantStudio 12K flex machine. 

Each chip can assay between 12 and 48 samples at once, depending on the number of assays on the chip.

Chips can be formatted with 18, 56, 112, 168 or 224 assays. 

There is a minimum order of 10 chips, but smaller projects are often cost effective, even when excess chips must be ordered.


Pricing varies by number of gene expression assays and sample numbers. Chips which use custom design assays are more expensive then chips that use only inventoried assays. 

 Examples using minimum numbers, for both options, are given below, but please  contact us for detailed information.

Please note that if you would run your samples in triplicate in a standard gene expression assay, you should do so with these assays as well. Sample numbers given below  do not take that into consideration.

How do I submit my samples?

Customers should prepare cDNA from total RNA, following recommended procedures, and fill out our online request form. Prepared cDNA should be brought to Blalock 1004 or dropped off in one of our remote locations in the appropriate number of 96 well plates. Mark each plate with the order number from the online request. Data will be returned to you via our ordering server.


Johns Hopkins East Baltimore Medical Campus

600 N. Wolfe Street

Blalock Building, Room 1004

Baltimore, MD 21287 USA


Monday – Friday:

7:00 am to 4:30 pm

After-hours pickup is available from the lockers near the Blalock elevators. Please contact us to make arrangements.