Ordering Information
SNP-based microarray analysis
array snp prenatal comparative microarray analysis CMA microarray Cytogenomics Cytogenetics Cytogenetic analysis
Insurance pre-authorization is required or let the patient know they may be charged for testing.
This test is for ongoing pregnancies only.
Specimen Requirements
NOTE: This test is for ongoing pregnancies only.
Villi
Minimum 20 mg
Optimal >30 mg
To add additional testing would require 10 mg per test, meaning >30 mg (if FISH requested with karyotype and CMA).
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.
Call for transport media or 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
Amniotic Fluid
Minimum 20 mL
Optimal >30 mL
Typically 10-15 mL for testing on direct (GA >17 wks) 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.
Call for transport media or to arrange specimen deliver (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
Fluid, Amniotic
Reference Ranges & Interpretation
An interpretive report will be issued
For Lab Staff
LABORATORY NOTES:
Villi
Minimum 20 mg
Optimal >30 mg
To add additional testing would require 10 mg per test, meaning >30 mg (if FISH requested with karyotype and CMA).
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.
Call for transport media or 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
Amniotic Fluid
Minimum 20 mL
Optimal >30 mL
Typically 10-15 mL for testing on direct (GA >17 wks) 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.
Call for transport media or to arrange specimen deliver (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
NOTE: This test is for ongoing pregnancies only.
- Johns HopkinsCytogenomics/Cytogenetics Lab
- Lab specimen shipping address: deliver to
- Johns Hopkins Hospital Core Lab
- 600 N Wolfe Street
- Baltimore, MD 21287
- Johns Hopkins Hospital Core Lab
- Johns HopkinsCytogenomics/Cytogenetics Lab
- 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
Billing Information
| Epic Charge Code | Qty. | CPT | RVUs |
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