Effective June 17, 2019, Anti-Müllerian Hormone (AMH) testing will change from a sendout reference test to Mayo Clinic Laboratories to an in-house test performed by Spectrum Health Regional Laboratory.
Obstetrics & Gynecology
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.
OB Magnesium, Blood Level – Epic code #LAB3400, Interface code #11703, CPT code #83735
Spectrum Health Regional Laboratory is not validated to perform Chlamydia and Gonococcus testing on pediatric patients under the age of 14 years old. Testing for these patients must be sent to a reference laboratory. Please order a Reference Miscellaneous Test (#LAB848) and indicate complete test name when ordering.
In 2014 The Bethesda System for reporting of Pap smears was revised. These revisions were published in 2015. We have modified our diagnostic categories to reflect these changes.
Reporting of endometrial cells in women over 40 years of age was changed to reporting endometrial cells in women over 45 years of age.
Recommendations were made to discontinue the use of Low grade squamous intraepithelial lesion (LSIL) with a few cells suggestive of high grade squamous intraepithelial lesion (HSIL). Based on the recommendations in Bethesda 2014, these lesions will be diagnosed as ASC-H in a background of LSIL.
The recommendation clarifies the treatment algorithm for these patients. These patients should have colposcopy. In our experience over 50% of these patients have biopsies diagnosed as high-grade squamous intraepithelial lesion (HSIL).
Safety of our patient and quality of care are of utmost importance. For this reason we require specimens sent to the Spectrum Health Cytology Laboratory be labeled with at least two patient identifiers, (i.e., patient name, birth date and MRN.) We will no longer return to the collection site, unlabeled, mislabeled specimens lacking two patient identifiers or specimen containers with multiple different patient labels. These specimens will be discarded and repeat collection will be necessary.
Procedures to verify correct labeling of patient specimens at the time of collection are recommended. Specimen containers should not be pre-labeled. Variation of the “time-out” procedure used in the hospital and surgical center setting is an excellent way of confirming that the specimen is correctly labeled. This can easily be achieved by having the patient verify his or her name and birth date, by reading the label placed on the specimen container at the time the specimen is collected. This “time out” should occur before the specimen leaves the examination or treatment room.
It is our mission to provide the best and safest care we can to our patients. We know that physicians and other practitioners are required to see patients more efficiently and at times with less than adequate time allowed. Following a “time out” procedure and not pre-labeling specimen containers will prevent errors that may lead to diagnoses being assigned to wrong patients, hence, unnecessary procedures and lack of follow-up for the appropriate patient.
Spectrum Health Laboratory strives to ensure that all marketing of laboratory services is honest, straightforward, fully informative and non-deceptive. The Spectrum Health’s Code of Conduct dictates that quality laboratory practices are followed and laboratory marketing activities must meet all government laws and regulations.
Thyroid Peroxidase Antibody (anti-TPO), Blood Level (Test #8524 )
This is the recommended test for the evaluation of Autoimmune Thyroiditis
Thyroglobulin, Tumor Marker, Serum (Test #3069)
It is only indicated for monitoring of thyroid cancer treatment.
This result is reported with an Anti-Tg result to assess for possible interference.
This test should NOT be ordered for associated anti-Tg result provided by reference laboratory.
Thyroglobulin Antibody (anti-Tg) Test
Historically ordered with anti-TPO for evaluation of possible autoimmune thyroiditis.
The literature shows that anti-TPO, alone, has better sensitivity and specificity with only 5% of cases of Autoimmune thyroiditis with anti-TPO negative, anti-Tg positive.
Since 2/2011, requests for anti-Tg have been cancelled per Laboratory Communication: Memo Thyroglobulin Antibody 2/2011
Spectrum Health Regional Laboratory Experience February 2015 – March 2016 (13 months):
357 patients with both Anti-TPO and Anti-Tg results.
*Anti-Tg results were due to concomitantly ordered Thyroglobulin TM requests.
250 patients had positive Anti-TPO and/or Anti-Tg level
193 patients had both positive Anti-TPO and Anti-Tg level
56 patients had positive Anti-TPO and negative Anti-Tg level
1 patient had a negative Anti-TPO and positive Anti-Tg levels
Based on these results, and what is reported in the literature, we are confident of our current practices and strongly request discontinuation of Thyroglobulin TM requests for the associated Anti-Tg result
Caturegli P, De Remigis A, Rose NR. Hashimoto thyroiditis: clinical and diagnostic criteria. Autoimmun Rev. 2014 Apr-May;13(4-5):391-7