Ordering Information

Epic Orderable Name:  POC array

Epic Test Id:  LAB53507

Testing Includes:  SNP-based microarray analysis on Products of Conception (POC) specimens.

Aliases:  array, snp, POC, comparative microarray analysis, CMA, microarray, Cytogenomics, Cytogenetics, Cytogenetic analysis

Testing Schedule:  Weekly

Turnaround Time:  Less than 42 days

Order Priorities:  Routine

Methodology:  Microarray

Ordering Restrictions:
- Insurance pre-authorization is required or let the patient know they may be charged for testing.
- This test is for products of conception specimens only.
- Use prenatal laboratory form.

Specimen Requirements

NOTE: This test is for products of conception specimens only.

Specimen:  
     Products of Conception Villi
          - Minimum 20 mg
          - Optimal >30 mg
          - Place in transport media provided; store and transport at room temperature - DO NOT FREEZE; DO NOT PUT IN FORMALIN. Do not send entire placenta to cytogenetics.
          - CMA testing on the direct specimen will depend on quality and quantity of available processed ("cleaned") villi.
          

     Products of Conception Tissue/Skin
          - Minimum 1 mm
          - Optimal >10 mm
          - Obtain recognizable fetal tissue and specify parts/organs. Place in transport media provided; store refrigerated and transport at room temperature - DO NOT FREEZE; DO NOT PUT IN FORMALIN. Do not send entire placenta to cytogenetics.
          - CMA testing on the direct specimen will depend on quality and quantity of available processed tissue.
          

     Products of Conception Fluid
          - Minimum 20 mL
          - Optimal >30 mL
          - Typically 10-15 mL for testing on direct (GA >17 weeks) or cultured cells. To add additional testing would require an additional 10 mL per test, meaning >30 mL (if FISH requested with karyotype and CMA). Store and transport at room temperature - DO NOT FREEZE. Use multiple 15 mL centrifuge tubes or contact the lab for a sterile container.
          - CMA testing on the direct specimen will depend on size and quality of pellet.
          

     Fetal Blood/Cord Blood
          - Minimum 1mL
          - Optimal 3 mL
          - Whole blood in a lavender top (EDTA); store and transport at room temperature - DO NOT FREEZE.
          

Call to arrange specimen delivery (tube to station 072, courier deliver or lab pick up).

LAB phone: 410-955-3476; specimens will be received M-F, between 8am and 4:30pm

Specimen Types:  POC Fluid, POC Tissue, POC Villi, Blood, Fetal

For Lab Staff

NOTE: This test is for products of conception specimens only.

Lab specimen shipping address - deliver to:
     Johns Hopkins Cytogenomics/Cytogenetics Lab
     600 N Wolfe Street
     Baltimore, MD 21287

LAB phone: 410-955-3476; specimens will be received M-F, between 8am and 4:30pm

Results in EPIC under Lab Results

Downtime: Use the Prenatal Laboratory form