Test Details
Methodology
High-pressure liquid chromatography (HPLC)/tandem mass spectrometry, equilibrium dialysis, calculation
Result Turnaround Time
8 - 12 days
Use
Progesterone plays an important role in the secretory transformation of the endometrium, maintenance of gestation, and relaxation of the myometrium. Progesterone is also a marker for ovulation and luteal phase of the menstrual cycle. Steroid hormones (like progesterone) circulate in the blood in protein-bound and free forms, and it is the free form that exhibits biological activity. The free form of progesterone is expected to reflect the biological activity of progesterone.
Specimen Requirements
Limitations
The test is not accurate for hemolyzed samples. Cortisol and other hormones that bind transcortin (corticosteroid-binding globulin) may affect the percentage of free progesterone.
Results of this test are for investigational purposes only. The performance characteristics of this assay have been determined by LabCorp. The result should not be used as a diagnostic procedure without confirmation of the diagnosis by another medically established diagnostic product or procedure.
References
Specimen
Serum (preferred) or plasma
Volume
1.6 mL
Minimum Volume
0.8 mL (Note: This volume does not allow for repeat testing.)
Container
Red-top tube, gel-barrier tube, lavender-top (EDTA) tube, or green-top (sodium heparin) tube
Storage Instructions
Freeze (preferred) or refrigerate.
Collection Instructions
To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Stability Requirements
Temperature | Period |
|---|---|
Room temperature | 6 days |
Refrigerated | 6 days |
Frozen | 6 days |
Freeze/thaw cycles | Stable x6 |
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 503658 | Total and Free Progesterone | 500168 | Progesterone, Serum | ng/dL | 2839-9 | |
| 503658 | Total and Free Progesterone | 503661 | % Free Progesterone (Dialysis) | % | 72890-7 | |
| 503658 | Total and Free Progesterone | 503659 | Free Progesterone | ng/dL | 72889-9 | |
| Order Code | 503658 | |||||
| Order Code Name | Total and Free Progesterone | |||||
| Order Loinc | ||||||
| Result Code | 500168 | |||||
| Result Code Name | Progesterone, Serum | |||||
| UofM | ng/dL | |||||
| Result LOINC | 2839-9 | |||||
| Order Code | 503658 | |||||
| Order Code Name | Total and Free Progesterone | |||||
| Order Loinc | ||||||
| Result Code | 503661 | |||||
| Result Code Name | % Free Progesterone (Dialysis) | |||||
| UofM | % | |||||
| Result LOINC | 72890-7 | |||||
| Order Code | 503658 | |||||
| Order Code Name | Total and Free Progesterone | |||||
| Order Loinc | ||||||
| Result Code | 503659 | |||||
| Result Code Name | Free Progesterone | |||||
| UofM | ng/dL | |||||
| Result LOINC | 72889-9 |