diff --git a/elcid/api.py b/elcid/api.py
index f69372676..c1e49e022 100644
--- a/elcid/api.py
+++ b/elcid/api.py
@@ -415,8 +415,7 @@ def serialise_lab_tests(self, patient):
                 )
 
         recent_dates = sorted(list(all_dates))
-        recent_dates.reverse()
-        recent_dates = recent_dates[:5]
+        recent_dates = recent_dates[:-5]
         obs_values = sorted(serialised_obvs, key=self.sort_observations)
         result = dict(
             obs_values=obs_values,