diff --git a/all.sas b/all.sas
index 491f3a7..1ceebf1 100644
--- a/all.sas
+++ b/all.sas
@@ -2179,7 +2179,11 @@ Usage:
   @param [in] test= (HASOBS) The test to apply.  Valid values are:
     @li HASOBS - Test is a PASS if the input dataset has any observations
     @li EMPTY - Test is a PASS if input dataset is empty
-    @li EQUALS [integer] - Test passes if obs count matches the provided integer
+    @li EQUALS [integer] - Test passes if row count matches the provided integer
+    @LI ATLEAST [integer] - Test passes if row count is more than or equal to
+      the provided integer
+    @LI ATMOST [integer] - Test passes if row count is less than or equal to
+      the provided integer
   @param [out] outds= (work.test_results) The output dataset to contain the
   results.  If it does not exist, it will be created, with the following format:
   |TEST_DESCRIPTION:$256|TEST_RESULT:$4|TEST_COMMENTS:$256|
@@ -2188,6 +2192,8 @@ Usage:
 
   <h4> Related Macros </h4>
   @li mp_assertcolvals.sas
+  @li mp_assert.sas
+  @li mp_assertcols.sas
 
   @version 9.2
   @author Allan Bowe
@@ -2212,6 +2218,22 @@ Usage:
     )
     %let test=EQUALS;
   %end;
+  %else %if %substr(&test.xxxxxxx,1,7)=ATLEAST %then %do;
+    %let val=%scan(&test,2,%str( ));
+    %mp_abort(iftrue= (%DATATYP(&val)=CHAR)
+      ,mac=&sysmacroname
+      ,msg=%str(Invalid test - &test, expected ATLEAST [integer])
+    )
+    %let test=ATLEAST;
+  %end;
+  %else %if %substr(&test.xxxxxxx,1,7)=ATMOST %then %do;
+    %let val=%scan(&test,2,%str( ));
+    %mp_abort(iftrue= (%DATATYP(&val)=CHAR)
+      ,mac=&sysmacroname
+      ,msg=%str(Invalid test - &test, expected ATMOST [integer])
+    )
+    %let test=ATMOST;
+  %end;
   %else %if &test ne HASOBS and &test ne EMPTY %then %do;
     %mp_abort(
       mac=&sysmacroname,
@@ -2223,7 +2245,8 @@ Usage:
     length test_description $256 test_result $4 test_comments $256;
     test_description=symget('desc');
     test_result='FAIL';
-    test_comments="&sysmacroname: Dataset &inds has &nobs observations";
+    test_comments="&sysmacroname: Dataset &inds has &nobs observations.";
+    test_comments=test_comments!!" Test was "!!symget('test');
   %if &test=HASOBS %then %do;
     if &nobs>0 then test_result='PASS';
   %end;
@@ -2233,6 +2256,12 @@ Usage:
   %else %if &test=EQUALS %then %do;
     if &nobs=&val then test_result='PASS';
   %end;
+  %else %if &test=ATLEAST %then %do;
+    if &nobs ge &val then test_result='PASS';
+  %end;
+  %else %if &test=ATMOST %then %do;
+    if &nobs le &val then test_result='PASS';
+  %end;
   %else %do;
     test_comments="&sysmacroname: Unsatisfied test condition - &test";
   %end;
@@ -2247,7 +2276,7 @@ Usage:
   proc sql;
   drop table &ds;
 
-%mend;/**
+%mend mp_assertdsobs;/**
   @file
   @brief Copy any file using binary input / output streams
   @details Reads in a file byte by byte and writes it back out.  Is an
diff --git a/base/mp_assertdsobs.sas b/base/mp_assertdsobs.sas
index ea98e89..46a16a7 100644
--- a/base/mp_assertdsobs.sas
+++ b/base/mp_assertdsobs.sas
@@ -18,7 +18,11 @@
   @param [in] test= (HASOBS) The test to apply.  Valid values are:
     @li HASOBS - Test is a PASS if the input dataset has any observations
     @li EMPTY - Test is a PASS if input dataset is empty
-    @li EQUALS [integer] - Test passes if obs count matches the provided integer
+    @li EQUALS [integer] - Test passes if row count matches the provided integer
+    @LI ATLEAST [integer] - Test passes if row count is more than or equal to
+      the provided integer
+    @LI ATMOST [integer] - Test passes if row count is less than or equal to
+      the provided integer
   @param [out] outds= (work.test_results) The output dataset to contain the
   results.  If it does not exist, it will be created, with the following format:
   |TEST_DESCRIPTION:$256|TEST_RESULT:$4|TEST_COMMENTS:$256|
@@ -27,6 +31,8 @@
 
   <h4> Related Macros </h4>
   @li mp_assertcolvals.sas
+  @li mp_assert.sas
+  @li mp_assertcols.sas
 
   @version 9.2
   @author Allan Bowe
@@ -51,6 +57,22 @@
     )
     %let test=EQUALS;
   %end;
+  %else %if %substr(&test.xxxxxxx,1,7)=ATLEAST %then %do;
+    %let val=%scan(&test,2,%str( ));
+    %mp_abort(iftrue= (%DATATYP(&val)=CHAR)
+      ,mac=&sysmacroname
+      ,msg=%str(Invalid test - &test, expected ATLEAST [integer])
+    )
+    %let test=ATLEAST;
+  %end;
+  %else %if %substr(&test.xxxxxxx,1,7)=ATMOST %then %do;
+    %let val=%scan(&test,2,%str( ));
+    %mp_abort(iftrue= (%DATATYP(&val)=CHAR)
+      ,mac=&sysmacroname
+      ,msg=%str(Invalid test - &test, expected ATMOST [integer])
+    )
+    %let test=ATMOST;
+  %end;
   %else %if &test ne HASOBS and &test ne EMPTY %then %do;
     %mp_abort(
       mac=&sysmacroname,
@@ -62,7 +84,8 @@
     length test_description $256 test_result $4 test_comments $256;
     test_description=symget('desc');
     test_result='FAIL';
-    test_comments="&sysmacroname: Dataset &inds has &nobs observations";
+    test_comments="&sysmacroname: Dataset &inds has &nobs observations.";
+    test_comments=test_comments!!" Test was "!!symget('test');
   %if &test=HASOBS %then %do;
     if &nobs>0 then test_result='PASS';
   %end;
@@ -72,6 +95,12 @@
   %else %if &test=EQUALS %then %do;
     if &nobs=&val then test_result='PASS';
   %end;
+  %else %if &test=ATLEAST %then %do;
+    if &nobs ge &val then test_result='PASS';
+  %end;
+  %else %if &test=ATMOST %then %do;
+    if &nobs le &val then test_result='PASS';
+  %end;
   %else %do;
     test_comments="&sysmacroname: Unsatisfied test condition - &test";
   %end;
@@ -86,4 +115,4 @@
   proc sql;
   drop table &ds;
 
-%mend;
\ No newline at end of file
+%mend mp_assertdsobs;
\ No newline at end of file
diff --git a/tests/base/mp_assertdsobs.test.sas b/tests/base/mp_assertdsobs.test.sas
new file mode 100644
index 0000000..950c6be
--- /dev/null
+++ b/tests/base/mp_assertdsobs.test.sas
@@ -0,0 +1,60 @@
+/**
+  @file
+  @brief Testing mp_assertdsobs.sas macro
+
+  <h4> SAS Macros </h4>
+  @li mp_assertdsobs.sas
+  @li mp_assertcolvals.sas
+
+**/
+
+
+data work.somedata;
+  do x=1 to 15;
+    output;
+  end;
+run;
+
+%mp_assertdsobs(work.somedata,
+  test=ATLEAST 15,
+  outds=work.test_the_test
+)
+
+%mp_assertdsobs(work.somedata,
+  test=ATMOST 15,
+  outds=work.test_the_test
+)
+
+data work.check;
+  val='PASS';
+run;
+%mp_assertcolvals(work.test_the_test.test_result,
+  checkvals=work.check.val,
+  desc=Testing ATLEAST / ATMOST for passes,
+  test=ALLVALS
+)
+
+%mp_assertdsobs(work.somedata,
+  test=ATLEAST 16,
+  outds=work.test_the_test2
+)
+%mp_assertdsobs(work.somedata,
+  test=ATMOST 14,
+  outds=work.test_the_test2
+)
+
+data _null_;
+  set work.test_the_test2;
+  putlog (_all_)(=);
+run;
+
+data work.check2;
+  val='FAIL';
+run;
+%mp_assertcolvals(work.test_the_test2.test_result,
+  checkvals=work.check2.val,
+  desc=Testing ATLEAST / ATMOST for failures,
+  test=ALLVALS
+)
+
+