Saved from a previous post:

If you want exact matches for just two columns (and return a value from a
third), you could use:

=index(othersheet!$c$1:$c$100,
match(1,(a2=othersheet!$a$1:$a$100)
*(b2=othersheet!$b$1:$b$100),0))

(all in one cell)

This is an array formula. Hit ctrl-shift-enter instead of enter. If you do it
correctly, excel will wrap curly brackets {} around your formula. (don't type
them yourself.)

Adjust the range to match--but you can only use the whole column in xl2007.

This returns the value in othersheet column C when column A and B (of
othersheet) match A2 and B2 of the sheet with the formula.

And you can add more conditions by just adding more stuff to that product
portion of the formula:

=index(othersheet!$d$1:$d$100,
match(1,(a2=othersheet!$a$1:$a$100)
*(b2=othersheet!$b$1:$b$100)
*(c2=othersheet!$c$1:$c$100),0))

Lost in Microbiology wrote:

I have a list (~1500 entries) that I need to match patients with their
specimen. The problem comes where a single patient will have multiple
entries. Then it only finds the first occurrence and not a subsequent sample.

Is there an if then statement or a way to use 2 columns for criteria in a
vlookup? I want to match a patient medical record number and a received date
tofind the result.

Here is an example of my data:
Name MRN Accession Rec Date Final Result
John Doe 12345 07-000-0001 1/1/2007 No Virus
John Doe 12345 07-020-0000 1/20/2007 RSV
Jane Doe 3456 07-000-0002 1/1/2007 No Virus

I have 2 lists like this, one for one procedure and another for another
procedure, and I have to match the information to determine specificity of
the tests. Any help is greatly appreciated!

--

Dave Peterson