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Test Code DNAEL DNA extraction

Specimen Requirements and Specimen Stability

Specimen Type 

Container/Tube 

Specimen Volume / Amount 

Specimen Stability 

Whole Blood 

Lavender Top EDTA Tube 

3.0 mL - 6.0 mL 

7 days, ambient or refrigerated 

Tissue: Umbilical cord, chorionic villi (CVS), tissue biopsies, products of conception (POC)

Sterile container with transport medium provided by Laboratory (10.0 mL) 

CVS/POC: minimum 20 mg 

All other tissue: 10-25 mg 

48 hours from collection 

Hair follicles 

Sterile container 

Minimum 20 hair follicles 

NA 

Cultured cells 

Eppendorf tube with cultured cells with >90% confluence in HBSS 

1 x 106  to  5 x 106 

12-24 hours from harvest 

Days and Times Performed

TAT 3 days

Referring / Testing Laboratory

National University Hospital

Molecular Diagnosis Centre, 67724384

Useful For

Extraction of human genomic DNA

Update

Last updated 05/05/2026

Service Code

LBC13186

1030129

Laboratory Code

LAB3040805

Test Info

(a)  This test was developed by NUH Laboratory Medicine.

(b) This laboratory test has undergone in-house evaluation with appropriate quality assurance and control measures in line with laboratory best practice and accreditation requirements.