| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Prolactin, Total and Monomeric (PROTM)
Test CodeLAB4365
Quest Code
16122
CPT Codes
84146 (x2)
Includes
Prolactin, Total
Prolactin, Monomeric
Prolactin, Monomeric
Preferred Specimen
1 mL serum in plain red top tube
Patient Preparation
Fasting specimen is recommended but not required
Minimum Volume
0.4 mL
Instructions
Collect blood by venipuncture into plain tubes (without anticoagulant). Separate the serum from the cells.
Transport Container
Transport tube
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 7 days
Refrigerated: 7 days
Frozen: 6 months
Refrigerated: 7 days
Frozen: 6 months
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Moderate and gross hemolysis • Plasma
Methodology
Immunoassay (IA) • PEG Precipitation
Setup Schedule
Wednesday
Reference Range
Prolactin, Total
Females (>18 years)
Stages of Puberty (Tanner Stages)
Prolactin, Monomeric
Adult Reference Ranges for Prolactin, Monomeric
Females (>18 years)
| Non-pregnant | 3.0-30.0 ng/mL |
| Pregnant | 10.0-209.0 ng/mL |
| Post-menopausal | 2.0-20.0 ng/mL |
| Males (>18 years) | 2.0-18.0 ng/mL |
Stages of Puberty (Tanner Stages)
| Female Observed | Male Observed | |
| Stage I | 3.6-12.0 ng/mL | ≤10.0 ng/mL |
| Stage II-III | 2.6-18.0 ng/mL | ≤6.1 ng/mL |
| Stage IV-V | 3.2-20.0 ng/mL | 2.8-11.0 ng/mL |
Prolactin, Monomeric
Adult Reference Ranges for Prolactin, Monomeric
| Females | 3.2-25.2 ng/mL |
| Males | 3.4-14.8 ng/mL |
Clinical Significance
For some patients the level of Prolactin measured by immunoassay may be inaccurate with respect to the level of monomeric, biologically active Prolactin. The Macroprolactin by PEG Precipitation test can help to identify if a patient sample has elevated Prolactin due to mostly inactive protein-bound Prolactin (Macroprolactin).
Performing Laboratory
| Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
| 33608 Ortega Highway |
| San Juan Capistrano , CA 92675-2042 |
