diff --git a/cg/models/orders/constants.py b/cg/models/orders/constants.py
index 42ab938df4..aacec8e9e5 100644
--- a/cg/models/orders/constants.py
+++ b/cg/models/orders/constants.py
@@ -26,6 +26,7 @@ class ExcelSampleAliases(StrEnum):
     COLLECTION_DATE = "UDF/Collection Date"
     COMMENT = "UDF/Comment"
     CONCENTRATION = "UDF/Concentration (nM)"
+    CONCENTRATION_NG_UL = "UDF/Concentration (ng/ul)"
     CONCENTRATION_SAMPLE = "UDF/Sample Conc."
     CONTAINER = "Container/Type"
     CONTAINER_NAME = "Container/Name"
diff --git a/cg/models/orders/excel_sample.py b/cg/models/orders/excel_sample.py
index bdc293f4e2..4c5871ed91 100644
--- a/cg/models/orders/excel_sample.py
+++ b/cg/models/orders/excel_sample.py
@@ -29,6 +29,7 @@ class ExcelSample(OrderSample):
     concentration: Annotated[str, AfterValidator(numeric_value)] = Field(
         None, alias=ExcelSampleAliases.CONCENTRATION
     )
+    concentration_ng_ul: str = Field(None, alias=ExcelSampleAliases.CONCENTRATION_NG_UL)
     concentration_sample: Annotated[str, AfterValidator(numeric_value)] = Field(
         None, alias=ExcelSampleAliases.CONCENTRATION_SAMPLE
     )
diff --git a/cg/models/orders/json_sample.py b/cg/models/orders/json_sample.py
index db775ed3f2..2d4440a38b 100644
--- a/cg/models/orders/json_sample.py
+++ b/cg/models/orders/json_sample.py
@@ -9,6 +9,7 @@
 class JsonSample(OrderSample):
     cohorts: list[str] | None = None
     concentration: str | None = None
+    concentration_ng_ul: str | None = None
     concentration_sample: str | None = None
     control: str | None = None
     data_analysis: Pipeline = Pipeline.MIP_DNA
diff --git a/cg/models/orders/sample_base.py b/cg/models/orders/sample_base.py
index 54cd1c57c4..d4a964f4b2 100644
--- a/cg/models/orders/sample_base.py
+++ b/cg/models/orders/sample_base.py
@@ -53,6 +53,7 @@ class OrderSample(BaseModel):
     collection_date: str | None = None
     comment: constr(max_length=Sample.comment.property.columns[0].type.length) | None = None
     concentration: float | None = None
+    concentration_ng_ul: float | None = None
     concentration_sample: float | None = None
     container: ContainerEnum | None = None
     container_name: str | None = None