diff --git a/lib/determine-basal/determine-basal.js b/lib/determine-basal/determine-basal.js
index 54f9b986e..171694eca 100644
--- a/lib/determine-basal/determine-basal.js
+++ b/lib/determine-basal/determine-basal.js
@@ -326,7 +326,14 @@ var determine_basal = function determine_basal(glucose_status, currenttemp, iob_
     }
 
     // min_bg of 90 -> threshold of 65, 100 -> 70 110 -> 75, and 130 -> 85
-    var threshold = min_bg - 0.5*(min_bg-40);
+
+    // But if profile.threshold_setting is over 65 increase the very minimum glucose threshold
+    var minimum_threshold = 60;
+    if (profile.threshold_setting) {
+        minimum_threshold = profile.threshold_setting;
+    }
+    var threshold = Math.max(min_bg - 0.5*(min_bg-40), minimum_threshold);
+    process.stderr.write("Glucose threshold: " + convert_bg(threshold,profile));
 
 // If iob_data or its required properties are missing, return.
 // This has to be checked after checking that we're not in one of the CGM-data-related error conditions handled above,
@@ -1094,10 +1101,18 @@ var maxDelta_bg_threshold;
                 maxBolus = round( profile.current_basal * profile.maxSMBBasalMinutes / 60 ,1);
             }
             // bolus 1/2 the insulinReq, up to maxBolus, rounding down to nearest bolus increment
+            
+            // New smb_delivery_ratio setting. Default is 1/2 the insulinReq (0.5), like before.
+            var smb_delivery_ratio = 0.5;
+            if (profile.smb_delivery_ratio) {
+                smb_delivery_ratio = Math.min(Math.max(profile.smb_delivery_ratio, 0.1), 1);
+                process.stderr.write("SMB Ratio: " + smb_delivery_ratio);
+            }
+            
             bolusIncrement = 0.1;
             if (profile.bolus_increment) { bolusIncrement=profile.bolus_increment };
             var roundSMBTo = 1 / bolusIncrement;
-            var microBolus = Math.floor(Math.min(insulinReq/2,maxBolus)*roundSMBTo)/roundSMBTo;
+            var microBolus = Math.floor(Math.min(insulinReq*smb_delivery_ratio,maxBolus)*roundSMBTo)/roundSMBTo;
             // calculate a long enough zero temp to eventually correct back up to target
             var smbTarget = target_bg;
             worstCaseInsulinReq = (smbTarget - (naive_eventualBG + minIOBPredBG)/2 ) / sens;
diff --git a/lib/profile/index.js b/lib/profile/index.js
index 8ede7f428..2180b0329 100644
--- a/lib/profile/index.js
+++ b/lib/profile/index.js
@@ -75,6 +75,8 @@ function defaults ( ) {
     , target_bg: false // set to an integer value in mg/dL to override pump min_bg
     , edison_battery_shutdown_voltage: 3050
     , pi_battery_shutdown_percent: 2
+    , threshold_setting: 60 // The minimum glucose threshold
+    , smb_delivery_ratio: 0.5 // Ratio of insulinReq, up to maxBolus, to deliver as SMB, when enabled. Default is 1/2 of insulinReq (0.5)
   }
 }