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HelpTest Code PTHCA Parathyroid Hormone and Calcium
Additional Codes
LAB813
Performing Laboratory
Central Peninsula Hospital
Collection Method
Venipuncture
Container
Gold Top / Serum Separator / Additive Free
Specimen Type
Gold Top / Serum Separator / Additive Free
Minimum Volume
0.5ml
Specimen Stability
See individual assays
Reference or Target Ranges
Calcium
| Age | Male | Female |
| 0 - 7 days | 7.5 - 11.0 | 7.5 - 11.0 |
| 8 days - 17 years | 8.7 - 10.7 | 8.7 - 10.7 |
| >18 years | 8.6-10.2 | 8.6-10.2 |
Parathyroid Hormone
15 - 65 pg/ml
Reportable Units
See individual assays
Critical Value
Calcium
≤ 6.0mg/dl
≥ 14.0 mg/dl
Reasons for Rejection
QNS, contaminated, improperly labeled, improper specimen type
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time |
Stat: 1 hour Routine: 4 hours |
| Stat Availability | Yes |
| Performing Bench | CPH Chemistry |
| Methodology/Method Description | Roche Cobas |
CPT Codes
CALCIUM SERUM 8231
PARATHYROID HORMONE 83970
Last review/edit date
2025