diff --git a/Tests/Formatter/FormatterTest.cs b/Tests/Formatter/FormatterTest.cs
index 7437d6b..871dab9 100755
--- a/Tests/Formatter/FormatterTest.cs
+++ b/Tests/Formatter/FormatterTest.cs
@@ -99,6 +99,25 @@ namespace Tests.Formatter
                 _document.Range().Text);
         }
 
+        [Test]
+        public void FormatSpecialItems()
+        {
+            ZaaImporter importer = new ZaaImporter();
+            importer.Import(
+                "Klinische Chemie: glomerul. Filtrationsr. CKD-EP: 36 ml/min /1,73qm; " +
+                "Sammelmenge (U): 12300 ml; "
+                );
+            Document document = new Document();
+            f.Formatter formatter = new f.Formatter(document);
+            formatter.Laboratory = importer.Laboratory;
+            formatter.Settings = new zaaReloaded2.Controller.Settings(
+                new List<ElementBase>() { new Items("*") } );
+            formatter.Run();
+            Assert.AreEqual(
+                "eGFR (CKD-EPI) 36 ml/min/1,73 m², SU-Volumen 12300 ml\r\r",
+                document.Range().Text);
+        }
+
         string GetResourceText(string resource)
         {
             try
diff --git a/zaaReloaded2/Controller/Elements/Items.cs b/zaaReloaded2/Controller/Elements/Items.cs
index b5710da..9baf10a 100755
--- a/zaaReloaded2/Controller/Elements/Items.cs
+++ b/zaaReloaded2/Controller/Elements/Items.cs
@@ -139,7 +139,6 @@ namespace zaaReloaded2.Controller.Elements
                 {
                     items.AddRange(CollectByName(formatter, itemName));
                 }
-
             }
             return items;
         }
@@ -158,6 +157,9 @@ namespace zaaReloaded2.Controller.Elements
                     .Where(i => !i.HasBeenUsed && !i.IsBlacklisted && i.LabItem.QualifiedName.StartsWith(material))
                     .ToList();
                 newItems.ForEach(i => i.HasBeenUsed = true);
+                // Include the material prefix only if this item was collected by a
+                // general wildcard ("*" rather than "SU-*" etc.).
+                newItems.ForEach(i => i.IncludeMaterial = String.IsNullOrEmpty(material));
                 items.AddRange(newItems);
             }
             return items;
diff --git a/zaaReloaded2/Importer/ZaaImporter/LaurisItem.cs b/zaaReloaded2/Importer/ZaaImporter/LaurisItem.cs
index ccff09a..71d7e19 100755
--- a/zaaReloaded2/Importer/ZaaImporter/LaurisItem.cs
+++ b/zaaReloaded2/Importer/ZaaImporter/LaurisItem.cs
@@ -76,6 +76,7 @@ namespace zaaReloaded2.Importer.ZaaImporter
                 Name = parameterDictionary.GetCanonicalName(OriginalName);
                 AlwaysPrintLimits = parameterDictionary.GetForceReferenceDisplay(OriginalName);
                 IsBlacklisted = parameterDictionary.GetIsBlacklisted(OriginalName);
+                Material = parameterDictionary.GetMaterial(OriginalName, Material);
             }
             if (unitDictionary != null)
             {
@@ -165,10 +166,12 @@ namespace zaaReloaded2.Importer.ZaaImporter
         }
 
         /// <summary>
-        /// Analyses the Lauris name for a material abbreviation.
-        /// If the parameter does not refer to blood (serum, whole
-        /// blood, etc.), Lauris appends an abbreviation in parentheses
-        /// to the parameter name.
+        /// Parses the original Lauris name for a material abbreviation.
+        /// This may be misleading in certain cases, e.g. "Sammelmenge (U)"
+        /// appears to be spot urine ("U"), but is collected urine instead
+        /// ("SU"). Therefore, in the constructor that takes the thesaurus
+        /// parameters, the material is looked up in the Parameters thesaurus.
+        /// ("Sammelmenge (U)" is contained in the Parameters thesaurus.)
         /// </summary>
         /// <example>
         /// Gesamt-Eiweiss (SU), Albumin (SU)/die, Gesamt-Eiweiss (PU)
diff --git a/zaaReloaded2/Thesaurus/Defaults/units.txt b/zaaReloaded2/Thesaurus/Defaults/units.txt
index 51a44d8..8981e90 100755
--- a/zaaReloaded2/Thesaurus/Defaults/units.txt
+++ b/zaaReloaded2/Thesaurus/Defaults/units.txt
@@ -2,7 +2,8 @@
 # ==============    ====================
 # WICHTIG: Nur direkt austauschbare Einheiten verwenden,
 # weil (bislang) keine Umrechnung der Werte vorgesehen ist!
-"ml/min/ 1,73qm"    "ml/min/1,73 m²"
+"ml/min /1,73qm"    "ml/min/1,73 m²"
 ng/ml               µg/l
 mmol/l              mM
-n*1000/µl           /nl
\ No newline at end of file
+n*1000/µl           /nl
+Bak/µl              /µl
diff --git a/zaaReloaded2/Thesaurus/Parameters.cs b/zaaReloaded2/Thesaurus/Parameters.cs
index e6444f2..981e7d8 100755
--- a/zaaReloaded2/Thesaurus/Parameters.cs
+++ b/zaaReloaded2/Thesaurus/Parameters.cs
@@ -69,16 +69,23 @@ namespace zaaReloaded2.Thesaurus
         /// <param name="laurisName">Lauris item name to look up.</param>
         /// <returns><see cref="zaaReloaded2.LabModel.Material"/> enum; if no material is
         /// found in the dictionary, the default material "S" (serum) is returned.</returns>
-        public Material GetMaterial(string laurisName)
+        public Material GetMaterial(string laurisName, Material def)
         {
             string textValue = LookUpValue(laurisName, 2);
-            try
+            if (String.IsNullOrEmpty(textValue))
             {
-                return MaterialFactory.FromAbbreviation(textValue);
+                return def;
             }
-            catch
+            else
             {
-                return Material.B;
+                try
+                {
+                    return MaterialFactory.FromAbbreviation(textValue);
+                }
+                catch
+                {
+                    return Material.B;
+                }
             }
         }