Test Code Fetal Screen Fetal Screen
Patient Preparation
Mother sample atleast 1 hour after delivery
Special Collection Instructions
Sample labeling requirements:
For all patients over the age of four months, when sample is
intended for transfusion purposes:
- A Blood Bank ID armband must be attached to the patient’s wrist at time of blood draw.
- The tube may be either labeled by hand at the bedside with ink
on an adhesive label or with a computer-generated label. Either
label must contain the following information:
- Complete first and last name. It is acceptable to hand write name if cutoff on computer label.
- Medical record number
- Date and time of collection
- Name or initials of the person collecting the sample.
- Blood Bank ID armband identifiers should be on tube, either in sticker form or hand written.
NOTE: Sample will need to be redrawn if missing any of the above information.
For patients under the age of four months, when sample is intended for transfusion purposes and/or cord blood samples:
- Complete first and last name
- Medical record number
- Date and time of collection
- Name or initials of the person collecting the sample.
Collection Method
Venipuncture
Minimum Volume
1 mL
Container
Purple Top EDTA
Preferred Specimen
2 mL EDTA Whole Blood
Acceptable Specimens
EDTA Whole Blood
Reference or Target Ranges
Not defined for this assay
Critical Value
Not defined for this assay
Reasons for Rejection
Hemolysis Threshold |
N/A |
Icterus Threshold |
N/A |
Lipemia Threshold |
N/A |
Interfering Substances/Other |
Missing any of the following: Complete first and last name, Medical record number, Date and time of collection, or Name or initials of the person collecting the sample. |
Specimen Stability
Ambient |
72 Hours |
Refrigerated (4°C to 8°C) |
72 Hours |
Frozen(-70°C to -20°C) |
N/A |
Performance Information
Days and Time Performed |
24/7 |
Expected Turn Around Time |
within 4 hours of arrival in lab |
Stat Availability |
No |
Performing Bench |
WCH Blood Bank |
Methodology/Method Description |
Manual – Tube Method |
CPT Codes
85461