Contact

Director: Li Liu, MD, PhD (617-726-9653)
Technical Director: Denise Zimmermann (617-726-3658)

Location: Gray-B-5
Phone: 617-726-2345
Fax: 617-726-9206

Lab Hours

The Chemistry Laboratory operates 7 days/week, 24 hours/day.

Critical Values
Critical values are called to the ordering location in accordance with the MGH Critical Values policy.

Criteria for Refusal of Specimens

• Specimen not labeled
• Name on specimen and requisition do not agree
• Quantity Not Sufficient (QNS) for testing
• Specimen unsuitable for testing – hemolyzed, too old, clotted
• Date of Specimen unknown
• Improperly sealed or leaking container

Chemistry Toxicology Service
The Chemistry Laboratory offers serum and urine toxicology services 24 hours a day (see “serum toxicology panel” and “toxicology screen, urine” in the index of tests).