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HelpTest Code LAB113 Phosphorus, Plasma or Serum
Reporting Title
Phosphorus
Methodology
Roche Diagnostics, Phosphomolybdate, Ultra Violet- RMH, GMC, DH, DMH, GMH, WECC, PMH, GCMH, BH, OBH, MGH, MH, HMH, SH
Low phosphorus occurs with hypoparathyroidism, vitamin D intoxication, and renal failure. Elevated levels occur with rickets, hyperparathyroidism, and Fanconi syndrome.
Performing Laboratory
OhioHealth Laboratory Services- RMH, GMC, DH, DMH, MGH, OBH, MH, SH, GCMH, BH, WECC, PMH Core Laboratories
Specimen Requirements
Collection Instructions:
1. Serum and Plasma gel tubes should be centrifuged within 2 hours of collection.
2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.
Submit only 1 of the following specimens:
Preferred:
Serum
Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.
Note:
1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.
2. Indicate serum on request form.
3. Label specimen appropriately (serum).
Alternate:
Plasma
Draw blood in a mint green-top (heparin) gel tube(s). Spin down and send 1 mL of heparinized plasma refrigerated.
Note: 1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum or plasma | Refrigerated | 4 days |
| Ambient | 24 hours | |
| Frozen | 12 months |
Specimen Transport Temperature
Refrigerate/Ambient OK/Frozen OK
Reference Values
Males
0-10 days: 4.5-9.0 mg/dL
11 days-24 months: 4.5-6.7 mg/dL
25 months-12 years: 4.5-5.5 mg/dL
13-60 years: 2.7-4.5 mg/dL
≥61 years: 2.3-3.7 mg/dL
Females
0-10 days: 4.5-9.0 mg/dL
11 days-24 months: 4.5-6.7 mg/dL
25 months-12 years: 4.5-5.5 mg/dL
13-60 years: 2.7-4.5 mg/dL
≥61 years: 2.8-4.1 mg/dL
Critical value <1.0 mg/dL
Alerting category: Always called within 1hour
Day(s) Test Set Up
Monday through Sunday; Continuously
Test Classification and CPT Coding
84100