Chemistry, Compliance & Safety, General Information

Reference Range Update – OB Magnesium, Blood Level

Effective immediately, the OB Magnesium (Mg) reference range has been updated from 1.6 to 2.5 mg/dL to 4.8 to 8.0 mg/dL, to reflect the correct therapeutic range for patients receiving magnesium sulfate therapy. The non-OB magnesium reference range is unchanged.

Please direct questions and inquiries to Dr. Jennifer Stumph via the Contact Us link above.

TEST INFORMATION

OB Magnesium, Blood LevelEpic code #LAB3400, Interface code #11703, CPT code #83735

Hematology, Referral/Sendouts

Hemoglobin A1c Testing Update

For Hemoglobin A1c testing, Mayo Clinic Laboratory has switched to an Ion-Exchange High-Performance Liquid Chromatography (HPLC) method (Bio-RAD D100) which is the same method of A1c testing used at Spectrum Health Regional Laboratory.  They no longer offer the alternative method, boronate affinity chromatography, for A1c testing.

When A1c cannot be determined due to  interferences that affect the Bio-RAD 100 method, measurement of serum fructosamine is recommended (Mayo test FRUCT). Continue Reading

General Information

Winter Lockbox Tips!

march-winter-lockboxTo maintain optimal specimen integrity, Corewell Health Laboratories West requests that you load your lockbox properly for winter weather temperatures. Please follow the diagram on the right to prevent freezing of specimens.

Frozen specimen should not be left in the lockbox for after-hours pickup. These tests may be better preserved in the office freezer until the next day’s courier pickup.

Request for specimen pickups in the West Michigan area should be made to the Laboratory Call Center at 616.774.7721.