diff --git a/all.sas b/all.sas
index dc736a6..921f8ea 100644
--- a/all.sas
+++ b/all.sas
@@ -9892,10 +9892,13 @@ alter table &libds modify &var char(&len);
       ;;;;
       run;
 
+  For more examples, see mp_validatecol.test.sas
+
   Tip - when contributing, use https://regex101.com to test the regex validity!
 
   @param [in] incol The column to be validated
   @param [in] rule The rule to apply.  Current rules:
+    @li ISINT - checks if the variable is an integer
     @li ISNUM - checks if the variable is numeric
     @li LIBDS - matches LIBREF.DATASET format
     @li FORMAT - checks if the provided format is syntactically valid
@@ -9904,6 +9907,9 @@ alter table &libds modify &var char(&len);
   <h4> SAS Macros </h4>
   @li mf_getuniquename.sas
 
+  <h4> Related Macros </h4>
+  @li mp_validatecol.test.sas
+
   @version 9.3
 **/
 
@@ -9913,7 +9919,13 @@ alter table &libds modify &var char(&len);
 %local tempcol;
 %let tempcol=%mf_getuniquename();
 
-%if &rule=ISNUM %then %do;
+%if &rule=ISINT %then %do;
+  &tempcol=input(&incol,?? best32.);
+  &outcol=0;
+  if not missing(&tempcol) then if mod(&incol,1)=0 then &outcol=1;
+  drop &tempcol;
+%end;
+%else %if &rule=ISNUM %then %do;
   /*
     credit SØREN LASSEN
     https://sasmacro.blogspot.com/2009/06/welcome-isnum-macro.html
diff --git a/base/mp_validatecol.sas b/base/mp_validatecol.sas
index bef24e7..ae25cca 100644
--- a/base/mp_validatecol.sas
+++ b/base/mp_validatecol.sas
@@ -20,10 +20,13 @@
       ;;;;
       run;
 
+  For more examples, see mp_validatecol.test.sas
+
   Tip - when contributing, use https://regex101.com to test the regex validity!
 
   @param [in] incol The column to be validated
   @param [in] rule The rule to apply.  Current rules:
+    @li ISINT - checks if the variable is an integer
     @li ISNUM - checks if the variable is numeric
     @li LIBDS - matches LIBREF.DATASET format
     @li FORMAT - checks if the provided format is syntactically valid
@@ -32,6 +35,9 @@
   <h4> SAS Macros </h4>
   @li mf_getuniquename.sas
 
+  <h4> Related Macros </h4>
+  @li mp_validatecol.test.sas
+
   @version 9.3
 **/
 
@@ -41,7 +47,13 @@
 %local tempcol;
 %let tempcol=%mf_getuniquename();
 
-%if &rule=ISNUM %then %do;
+%if &rule=ISINT %then %do;
+  &tempcol=input(&incol,?? best32.);
+  &outcol=0;
+  if not missing(&tempcol) then if mod(&incol,1)=0 then &outcol=1;
+  drop &tempcol;
+%end;
+%else %if &rule=ISNUM %then %do;
   /*
     credit SØREN LASSEN
     https://sasmacro.blogspot.com/2009/06/welcome-isnum-macro.html
diff --git a/tests/crossplatform/mp_validatecol.test.sas b/tests/crossplatform/mp_validatecol.test.sas
index 2fdae62..64c66a9 100644
--- a/tests/crossplatform/mp_validatecol.test.sas
+++ b/tests/crossplatform/mp_validatecol.test.sas
@@ -92,4 +92,38 @@ run;
   desc=Test3 - ISFORMAT,
   test=EQUALS 5,
   outds=work.test_results
+)
+
+/**
+  * Test 4 - ISINT
+  */
+data test4;
+  infile datalines4 dsd;
+  input;
+  infile=_infile_;
+  %mp_validatecol(infile,ISINT,is_integer)
+  if is_integer=1;
+datalines4;
+1
+1234
+-134
+-1.0
+1.0
+0
+above are good
+the rest are bad
+%abort
+1&somethingverybad.
+&
++-1
+.
+a.A
+$format12.1b
+$format12.1b1
+;;;;
+run;
+%mp_assertdsobs(work.test4,
+  desc=Test4 - ISFORMAT,
+  test=EQUALS 6,
+  outds=work.test_results
 )
\ No newline at end of file