diff --git a/genomic_address_service/call.py b/genomic_address_service/call.py
index e267689..0e7cc9f 100644
--- a/genomic_address_service/call.py
+++ b/genomic_address_service/call.py
@@ -98,7 +98,7 @@ def run_call(config):
     if thresh_map_file is not None:
         threshold_map = json.load(open(thresh_map_file,'r'))
     else:
-        threshold_map = init_threshold_map(membership_file,thresholds)
+        threshold_map = init_threshold_map(thresholds)
 
 
     run_data['threshold_map'] = threshold_map
diff --git a/genomic_address_service/utils.py b/genomic_address_service/utils.py
index 5ff9ba6..2453cd9 100644
--- a/genomic_address_service/utils.py
+++ b/genomic_address_service/utils.py
@@ -71,21 +71,10 @@ def write_cluster_assignments(file ,memberships, threshold_map, outfmt, delimete
     else:
         fp.write(file, df, compression='GZIP')
 
-def init_threshold_map(file,thresholds):
+def init_threshold_map(thresholds):
     thresh_map = {}
-    df = pd.read_csv(file,header=0,sep="\t")
-    cols = df.columns.values.tolist()
-    valid_cols = []
-    for idx,value in enumerate(cols):
-        if value in ['sample_id','id','ST','nomenclature','address']:
-            continue
-        valid_cols.append(value)
-
-    if len(valid_cols) != len(thresholds):
-        return {}
-
-    for idx,value in enumerate(valid_cols):
-        thresh_map[value] = thresholds[idx]
+    for idx,value in enumerate(thresholds):
+        thresh_map[idx] = value
 
     return thresh_map