UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

Array CGH, prenatal

Item Value
Approval req'd? Yes, if not ordered by Genetics or Neurology faculty or fellows. Requests on inpatients require approval from Cytogenetics/Array staff.
Available Stat? No
Utilization Guidelines Tests with long turn-around times (ie. Molecular based tests and Microarrays) should only be requested on an inpatient if the result is going to affect the inpatient management.

If the patient will likely be discharged before the result will be available, the test should be requested after discharge. (NOTE: UCSF Medical Center is not reimbursed for inpatient testing).

An exception to the above may be appropriate if there is a possibility the patient will not survive to be discharged and the information is important for diagnosis and/or family decisions/management (ie. recurrence risk).
Test code ACGHP
Test group Microarray
Performed by Combimatrix
Sendout? Yes
Method Array CGH
Collection Instructions Insurance pre-authorization required for outpatients

Only collect samples Monday - Friday and avoid holidays.

Transport sample at room temperature as soon as possible to lab. If transport is delayed refrigerate sample.

Print out, complete and submit a Combimatrix requisition with the sample

Click here for form and submit along with a completed UCSF Cytogenetic or Molecular Genetic requisition

There are also instructions available for completing the Combimatrix form. Click here for instructions
Container type See sample type
Sample type DNA, POC, Chorionic villi, Amniotic fluid
Normal range Normal
Synonyms Microarray; Oligo HDscan; aCGH; Oligoarray
Additional information Limitations:
Genomic aberrations that cannot be detected by array CGH assay include:
1. Balanced rearrangement (i.e. balanced translocation, balanced insertion/deletion or inversion)
2. Low level mosaicism
3. Nucleotide sequence changes (i.e. point mutation or small insertion/deletion below the level of detection – per established guidelines <200kb for duplication and deletion)
4. Epigenetic events (i.e. uni-parental disomy, imprinting mutation)
5. Imbalances of regions not represented on the microarray
6. Ploidy change without additional aberration (i.e. 69,XXX)
Last Updated 2/24/2015 1:25:32 PM
Entry Number 1277
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center