Alpha-Subunit Pituitary Tumor Marker, Serum

Abbrev Code:ASBPTM   
Order Code:LAB6777Order Name:Alpha-Subunit Pituitary Tumor Marker
Methodology:Immunochemiluminescent assay
CPT Codes: 82397 x1
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 1-7 days.

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.9 mL
Container:Red (no gel)
Alternate Containers: Red or gold (gel)
Causes for Rejection:Gross hemolysis

Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1 mL, 0.35 mL minimum. Store frozen.
Shipping Instructions:Ship frozen
Stability:7 days at refrigerated temperature; 90 days frozen.
Test Performed at or Referral Lab Lab Sendouts  (Mayo Medical Laboratories)
Referral Lab number:APGH


Reference Range:



Less than or equal to 5 days

≤ 50 ng/mL

6 d – 12 wk

≤ 10 ng/mL

3 mo – 17 y

≤ 1.2 ng/mL

Tanner II-V*

≤ 1.2 ng/mL




≤ 0.5 ng/mL

Premenopausal Females

≤ 1.2 ng/mL

Postmenopausal Females

≤ 1.8 ng/mL

Pediatric and adult reference values based on Mayo studies.


Use:Differential diagnosis of thyrotropin-secreting pituitary tumor versus thyroid hormone resistance. Differential diagnosis of constitutional delay of puberty versus hypogonadotropic hypogonadism.

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